10/15/2018 Category: Cockroaches Author: Valery Viktorov
Of all the currently existing methods of combating household pests such as cockroaches, the most effective is considered to be disinfestation of the contaminated area with pesticides. However, it is not possible to use poison always and not everywhere, and here special devices - repellers - can come to the rescue.
- 2 Ultrasonic devices
2.1 Do cockroaches experience a sense of fear when using ultrasound? - 2.2 Advantages and disadvantages of ultrasonic devices
- 2.3 Rules for operating the cockroach repeller
- 3.1 Typhoon LS-500
3.1.1 Video: review of the repeller
- 3.2.1 User reviews
- 3.3.1 Reviews of Zenet XJ-90
- 3.4.1 Customer reviews
- 3.5.1 Reviews of Tornado OT-01
- 3.6.1 User reviews
- 6.1 EcoSniper AR-120
6.1.1 Reviews of EcoSniper AR-120
- 6.2.1 User reviews
- 6.3.1 Reviews of EMR-21
Types of repellers
The main purpose of these devices is not to destroy, but to create conditions unbearable for the life of pests. Most often, repellers are used as part of a set of preventive measures, collectively called “barrier protection.”
The devices affect the sensory organs of cockroaches through signals of a certain intensity and frequency. Based on the type of radiation, repellers are classified as ultrasonic and electromagnetic. There are also combined gadgets that combine these technologies and have additional options.
Electrofumigators, which work effectively against small flying insects, however, have little effect on the behavior of cockroaches. In addition, most of these devices are designed to destroy pests, so these devices can only be classified as repellers conditionally.
Kinds
Devices that repel cockroaches are distinguished by their versatility, parameters, properties, operating principle and range.
Ultrasonic
The device does not kill, but repels cockroaches using ultrasound. The waves travel quite far. Only when the frequency is high do cockroaches leave their habitat. Such devices do not have a negative effect on the human body or pets.
Magnetic resonance
The devices emit low-frequency electromagnetic waves. This forces insects to change their place of residence. The safety of a repeller directly depends on its power. Devices emitting low frequencies are unproductive: the devices only repel pests without killing them, but do not harm people and animals. Industrial magnetic resonance repellers are considered more effective, but they have a bad effect on the human body.
Electrofumigators and aquafumigators
Electrofumigators against cockroaches look the same as their anti-mosquito counterparts. To operate the device, special tablets are used, which emit a specific odor when heated. The aroma spreads throughout the room and repels pests.
Aquafumigators are considered a fairly strong and universal remedy. The device is connected to an outlet and a substance is released along with the water that repels and poisons cockroaches. Compared to other devices, the devices are low cost, easy to use, and quite effective. Cons: the substance may have an unpleasant odor and be harmful to health.
Ultrasonic devices
Ultrasound is considered to be acoustic waves whose frequency exceeds 20 kilohertz. Ultrahigh-frequency radiation today is widely used in medical technology and production. The human ear is not capable of perceiving very high frequencies, but some animals and insects use ultrasound to transmit information to each other and react to it.
Ultrasonic devices, according to the developers, work effectively against a wide variety of pests
The described feature made it possible to use ultrasound to repel pests, including cockroaches. However, in this case, more questions arise than answers, because the latter practically do not react to sounds and communicate through direct physical contact and chemical secretions.
The operating principle of an ultrasonic repeller is quite simple. When power is applied, the electronic filling of the device generates pulses of the required amplitude. A sawtooth voltage is supplied to a special sensor (piezoelectric element or dynamic head), which generates the final acoustic signal.
Do cockroaches feel fear when using ultrasound?
Manufacturers of ultrasonic devices note that when the repeller is turned on, cockroaches experience a feeling of fear and panic, trying to leave the dangerous territory as quickly as possible. In light of the fact that pests do not have organs for perceiving such signals, this statement may be very doubtful.
An effective cockroach repeller must have sufficient power
On the other hand, some users still note a certain effect from the use of high-power ultrasonic repellers, but the operation of such devices is permissible only in the absence of people. Thus, we can conclude that the effectiveness of household ultrasonic repellers in the fight against cockroaches will most likely not be high, but this method is applicable in conjunction with other measures to control and prevent the appearance of pests.
Advantages and disadvantages of ultrasonic devices
Among the positive aspects of using ultrasonic cockroach repellers are:
- ease of use - the devices do not require any specific maintenance and care;
- safety in relation to people (there is a conflicting opinion of experts);
- environmental friendliness - the devices do not emit harmful or toxic substances.
The disadvantages of ultrasonic cockroach repellers are:
- their unsafety in relation to pets - especially small rodents (hamsters, mice and rats) and birds;
- most often low efficiency;
- quite high price - especially for the so-called professional models.
Rules for using a cockroach repeller
You can achieve a certain effectiveness of the repeller by adhering to the recommended rules for its use.
The ultrasonic cockroach repeller is placed at a height of 1–1.5 meters from the floor
User manual:
- use not one, but several devices at the same time. This approach will help get rid of insect colonies. Ideally, you should place an appliance in each room;
- The repeller should not be installed level with the floor. By raising the device to a height of one meter, you will significantly increase the area of its impact;
- in a room cluttered with furniture and other interior items, the effectiveness of the ultrasonic repeller is reduced. The way out is to install two or more devices indoors;
- While using the gadget, you need to monitor your condition, the condition of other people, especially children, as well as the behavior of pets. If anyone becomes ill, you should stop using the repeller;
- If damage or malfunction is detected, the device should be repaired or replaced. Using a faulty device is unacceptable;
- use the repeller in combination with other methods of control and prevention. The main remedy, for example, may be a special insecticide;
- According to manufacturers of ultrasonic repellers, the effect of using the latter is not immediate. You should wait one to three weeks;
- The device must operate continuously and cannot be disconnected from the network. Otherwise, the cockroaches will most likely return.
Why does ultrasound not work against cockroaches?
The concept of repelling insects using ultrasound originally came about when scientists noticed that mosquitoes use it to communicate. Certain frequencies had a deterrent effect on flying bloodsuckers because they signaled the approach of predators. Manufacturers quickly began assembling such ultrasonic devices and they flooded the market. But what is true for mosquitoes does not work against cockroaches and bedbugs.
Indoor insects do not use ultrasound to communicate and warn of danger. The squeak has no effect on them. The effectiveness of high-power industrial devices is explained by the high intensity of the sound produced. It is so powerful that it irritates everyone, including humans.
Thus, we can conclude that the effectiveness of ultrasonic and electromagnetic devices is greatly overestimated. They can only affect cockroaches with high power. However, powerful devices also affect humans and are poorly applicable in residential areas. It is not safe for a person to be near them for a long time. Therefore, powerful ultrasonic units are used mainly in production and warehouses.
Popular ultrasonic models
Ultrasonic repellers can be used both at home and at work. Often these devices are universal, that is, they work against a wide variety of pests.
Typhoon LS-500
The ultrasonic repeller Typhoon LS-500 allows you to fight various types of insect pests, these are:
- fleas,
- ants,
- cockroaches,
- bedbugs.
The Typhoon LS-500 device causes discomfort and a feeling of panic in insects
. According to the manufacturer, the device causes discomfort and a feeling of panic in insects. Pests try to leave the dangerous area as quickly as possible. Additionally, the device affects cockroaches with light radiation and an audio frequency signal in the audible range (makes clicks). The complete disappearance of insects occurs in the second or third week of continuous operation of the LS-500.
The repeller can be used on objects such as:
- household premises - living rooms, kitchens, bathrooms;
- utility premises of various kinds - warehouses, change houses, catering establishments and the like.
The device operates from an electrical network with a voltage of 220 Volts. The built-in microcontroller automatically changes the sound frequency and duration of ultrasound radiation, so cockroaches cannot adapt to unfavorable conditions for them.
Video: review of the repeller
Reviews about Typhoon LS-500
I also bought this one. I was watching TV and an advertisement started advertising the ultrasonic cockroach repeller Typhoon LS-500. And of course I wondered what it was, since we live in an apartment and sometimes suffer from these cockroaches. What can I say, a highly advertised device that does not perform its functions. My cockroaches lived in the kitchen and stayed there, they didn’t run away anywhere. Wasted money.
kurovskaya1
https://otzovik.com/review_2664128.html
The device worked for me for about a year and during this time I never saw cockroaches. However, beetles and spiders periodically delighted me with their presence. Therefore, we can say that the device has no effect on insects in general. After I turned off the Typhoon ultrasonic repeller, 4 years have passed. During this time, I met cockroaches in the kitchen 1 or 2 times.
lano4ka
https://otzovik.com/review_2058917.html
Weitech WK-0600
The manufacturer positions the Weitech WK-0600 ultrasonic device as a powerful professional means of combating pests and rodents. First of all, the device is recommended for use in non-residential premises of industrial and commercial enterprises, warehouses, bases, and in the holds of ships. WK-0600 can also be used at home, but in the absence of people and their pets. Thanks to the increased power, dual emitter and protection from adverse environmental conditions, the gadget is suitable for use in open areas.
The effectiveness of the technologies used in Weitech WK-0600 has been confirmed by tests in independent laboratories
Weitech WK-0600 has several operating modes. Adjustment is carried out both in range and in the level of the emitted signal. In the presence of people, it is recommended to turn on the device only in the so-called “quiet mode” with reduced power.
According to the manufacturer, the repeller affects the nervous system of pests, forcing them to leave the protected area.
User reviews
The Weitech WK-0600 ultrasonic rodent and insect repeller is a complete deception of honest people. With the money I earned, I bought a Weitech WK-0600 ultrasonic rodent and insect repeller last year. I really hoped for the advertising of this miracle device. I turned it on several times a day, left it on longer than recommended in the instructions, and had zero effect. I don’t know about rodents (I poison them in the usual traditional way), but there are no fewer insects in the house.
FLORENZIA
https://otzovik.com/review_1465592.html
No comments. The rating is probably five. Everything is fine with the device.
Denis
https://www.mfshop.ru/otpugivateli-gryzunov/ultrazvukovojj-otpugivatel-gryzunov-krys-myshejj-i-nasekomykh-vk-600-profi_otziv.html
Zenet XJ-90
The universal repeller ZENET XJ-90 helps fight mosquitoes, cockroaches and other insects without having a negative impact on people and pets. The operating principle of the device is based on the impact of an ultra-high frequency sound signal on pests. The device operates from a standard power supply.
The Zenet XJ-90 device does not emit any harmful or toxic substances
Among the features of the ZENET XJ-90 repeller are:
- covered area up to 25 square meters,
- efficiency,
- presence of night lighting.
The device can be used with equal success both in residential premises and at industrial facilities for various purposes.
Reviews about Zenet XJ-90
We bought this cockroach repeller. Not only did they not disappear, they lived on it. Therefore, I can say that this is complete nonsense, or our cockroaches are not afraid of anything.
Katushka30
https://otzovik.com/review_498500.html
Today, once again, I received an ultrasonic rodent and insect repeller Zenet XJ-90 at the request of my daughter. She studies at the university and lives in a dormitory. And imagine that cockroaches have the most freedom there. I and all my neighbors and friends who encountered a similar problem used this device. Now I decided to help my daughter and her dorm friends get rid of this disaster. We also had a time when you couldn’t sleep at night for fear that a cockroach would fall on you from the ceiling or crawl along your arm. And the constant washing of tables, cabinets and refrigerators from traces of these disgusting cockroaches. We tried all sorts of methods: the whole apartment was outlined with “Chinese pencils”, we barely saved the cat because he ate several potato balls with boric acid, and what effort did it take to constantly wash the whole house of poison and pencil... Looking at all this simply It is impossible to maintain peace of mind. But now we're okay. We got rid of the cockroaches.
AlisaLAV
https://otzovik.com/review_638532.html
EcoSniper LS-927
The main distinctive feature of the EcoSniper LS-927 insect and rodent repeller is the presence of a powerful dual ultrasonic generator. According to the developers of the device, this at least doubles the efficiency of the device.
The EcoSniper LS-927 repeller is distinguished by ease of use and the ability to work from the network via an adapter
The universal ultrasonic repeller EcoSniper LS-927 works against such pests as:
- cockroaches,
- ants,
- spiders,
- rats,
- mice.
The device's data sheet claims an amazing impact area of up to 500 square meters. At the same time, the repeller does not consume a large amount of electricity and has small dimensions and weight.
Customer Reviews
The device is Chinese. Works the same as cheaper models. Massive propaganda has been noticed regarding this manufacturer.
Galyr
https://otzovik.com/review_3493040.html
The device has two modes for using sound, one of which is hardly applicable in residential areas, a very sharp sound. Some people are annoyed by the blinking light, so not everyone can tolerate silent mode.
Margosha
https://www.otovarah.ru/forum/topic/5445-ultrazvukovoy-stacionarnyy-otpugivatel-krys-myshey-tarakanov-ekosnayper-ls-927m/
Advantages: 1. Almost silent device, faint clicks are heard, absolutely not straining the ear; 2. Manufacturer Taiwan; 3. Two speakers for better range. Operate in different frequency ranges; 4. Plastic does not smell. Disadvantages: None.
Alexei
https://www.onlinetrade.ru/catalogue/otpugivateli_i_lovushki-c4069/ekosnayper/otpugivatel_nasekomykh_i_gryzunov_ekosnayper_ls_927_statsionarnyy-840937.html#tabs_feedbacks
Tornado OT-01
Tornado OT-01 is a Russian product made from Chinese components. Whether this is good or bad is ultimately up to the users of the device to decide, but according to the majority, the device does not cope very well with cockroaches.
Ultrasonic repeller Tornado OT-01 is one of the developments of the domestic enterprise LLC MNPF Center New Technologies
Despite the not very positive reviews, OT-01 can be used to prevent the appearance of pests and to combat them together with chemicals. The device has a fairly compact size and is not very heavy. The body is made of black plastic. There is an indicator of the repeller operation. The device operates from a network with a voltage of 220 Volts.
Reviews about Tornado OT-01
Works! I bought it for testing, since the chemistry didn’t really help. The device had a strange effect: in the first three days, cockroaches crawled out from wherever possible, it even began to seem that there were more of them. I called the store to find out what it was. They told me that this is how it should be, and that the cockroaches will soon leave. And indeed, 8 days have passed and there are much fewer cockroaches!
Svetlana Viktorovna
https://otzverey.ru/otpugivateli-tarakanov/tornado-ot-01-moshchnyy-ultrazvukovoy-otpugivatel-tarakanov/
EMR-25
The EMR-25 device is a multifunctional insect and rodent repeller and combines the principles of ultrasonic and electromagnetic radiation. The device can be used against:
- cockroaches,
- ants,
- spiders,
- crickets,
- silverfish,
- earwig,
- fleas,
- ticks,
- scorpios,
- bats,
- house and garden mice,
- rats
The EMR-25 also works as an air purification device.
The device can operate in one of the four modes listed below:
- electromagnetic radiation,
- ultrasound,
- air purifier,
- ultrasonic radiation and cleaner.
Interestingly, the impressive range of modes, high quality workmanship and fairly high power of the device do not greatly affect its cost. We can say that this repeller has a balanced price-quality ratio.
User reviews
We bought a universal ultrasonic and electromagnetic repeller of rats, mice, ants, cockroaches, ticks, fleas, spiders and crickets EMR-25. My impressions: If the cat heard it, it didn’t react. The device buzzes only if you bring your ear close to it. The night light is nasty, blue, but slightly illuminates the room. In general, his presence is not particularly felt. Used it for two months. The result is promised in 2-3 weeks, on some resources - in four. And so: The mice, as promised, activated: they began to throw themselves out of the cracks and were finished off by the cat, they began to crap more, a couple of times some stupefied individuals came out and stood, thinking about life (the cat was ready) And then nothing. As they galloped, they still gallop to this day. Insects: cockroaches and mosquitoes don’t really care about this thing. Spiders also walk around the house wherever they want.
Yulia as Yulia
https://irecommend.ru/content/ultrazvukovoi-i-elektromagnitnyi-otpugivatel-myshei-otechestvennogo-proizvodstva-veshch-doro
Table: characteristics of ultrasonic repellers
| Model | Power | Operating frequency range | Nutrition | Impact area | price |
| Typhoon LS-500 | 1 W | 20–40 kHz | 220 V | up to 80 sq. m. | 1100 rub. |
| Weitech WK-0600 | 0.4 W | 2–50 kHz | 220 V | up to 325 sq. m. | 6990 rub. |
| Zenet XJ-90 | 1 W | 20–27 kHz | 220 V | 20–25 sq. m. | 1000 rub. |
| EcoSniper LS-927 | 1.5 W | 20–40 kHz | 220 V | up to 460 sq. m. | 2000 rub. |
| Tornado OT-01 | 1 W | 13–27 kHz | 220 V | up to 50 sq. m. | 900 rub. |
| EMR 25 | 1.5 W | 20–40 kHz | 220 V | up to 560 sq. m. | 1800 rub. |
Rating of the 12 best repellers
There is high competition among electronic repellers on the market. Some people swear that ultrasonic repellers have worked wonders on their bug problems, while others swear just as vehemently that they did nothing.
Since ultrasonic techniques rely on the propagation of ultrasonic sound waves, we suspect a lot of this has to do with the placement of the devices, interference from upholstered furniture (which absorbs sound), and other physical obstacles.
Russian repeller "GRAD A-1000 PRO"
A universal device that has 4 operating modes (against cockroaches, mosquitoes, low power and high). The range is up to 1000 square meters. The repeller can be used in different rooms (both residential and industrial). The desired result appears within 2 weeks. The device does not overheat.
REXANT 71-0018
This device is recommended by the manufacturer for use in two- to three-room apartments. Powered by mains. Radius of action 60 sq.m. Non-toxic.
Pest Repeller
Small and powerful, each one will take up an entire room in the house.
Since they plug into a standard wall outlet, there is no need to change batteries or worry about them. It works around the clock to remove cockroaches from your home. There are no dangerous poisons or awkward traps around.
In fact, most people won't even know who they are when they see them, they'll just think they're a night light.
Pest Reject
An American-made device with a range of up to 200 meters. This is a modern and quite effective repeller with a wide spectrum of action.
Therefore, using this device you can get rid of not only cockroaches, but also other insects and rodents. This drug is best used in combination with insecticides, as well as with various traps.
Ultrasound duo
This device can easily be considered one of the modern, most advanced ultrasonic repellers. The device is capable of generating a wide band of ultrasonic frequencies that affect the nervous system and hearing organs of various insects, including cockroaches and rodents. The negative effect of ultrasound creates uncomfortable conditions for their life activities so that they are forced to look for more comfortable conditions.
Ultrasonic repellers are safe (at least that’s what the manufacturers claim) for humans, as well as some pets. In addition, the operation of the device does not negatively affect the operation of other electrical appliances and telecommunications.
This device is distinguished by the presence of 3 operating modes, which allows you to change the frequency of ultrasound generation in a wide range (from 25 to 65 kHz). The device is capable of protecting a room of up to 550 square meters from cockroaches. In a few days there will be no trace left of the “uninvited guests”.
Unfortunately, the repeller only affects adults and does not have a negative effect on egg laying. The greatest effect can be obtained in combination with chemical control agents.
31st century UP-118
The device is absolutely safe for humans. Pests are leaving their hiding places.
The advantage is the high frequency of the device (30-65 thousand Hz). The sound pressure level reaches 140 dB. It is also convenient that there is a power adapter available. The ultrasonic domestic cockroach repeller covers large areas (230 sq.m.). In addition to cockroaches, you will also get rid of moths, fleas and other parasites.
Tornado OT.02
According to the manufacturer's plan, the device is equipped, because it is known that they are no less afraid of sunlight than ultrasound. The ultrasonic domestic cockroach repeller weighs very little, has small dimensions, temperature control (from -30 to +80 degrees), but, unfortunately, it covers an area of only 50 square meters.
LS-968
The model has a stylish and functional design, in addition, it can be placed on the wall and ceiling. The frequency of ultrasonic waves reaches 27 thousand Hz, sound pressure is 130 dB. Adjusting the temperature of the ultrasonic cockroach repeller from -10 to +50 degrees Celsius
WK-3523
If you want to have a premium device, then this model is definitely worth paying attention to. The kit includes three devices at once. In addition to ergonomic power consumption, the Ultrasonic Pet Cockroach Repeller is also safe for people and pets. The device has a compact size and low weight (0.11 kg); temperature control from -10 to +40 degrees Celsius. Ultrasonic pressure does not exceed 130 dB; Coverage up to 45 sq.m.
Tornado-800
The ultrasonic repeller of domestic cockroaches, rodents and insects is intended for residential and industrial premises with a coverage of up to 800 sq.m. Taking up little space, it will scare away all pests due to the high frequency and pressure of ultrasonic waves. It is frost-resistant. Distributes ultrasonic waves up to 800 sq.m; ultrasonic pressure is 102 dB. Temperature regulator from -40 to +80 degrees.
AR-120
Effectively operates on an area of up to 50 square meters. Depending on the number of pests, the device can be turned on either for several weeks or for several months. The device costs about 2 thousand rubles, which is quite expensive for this class of device.
It is important to know! Ultrasonic and electromagnetic repellers are designed to last a long time, so they must work for a long time until the insects disappear completely.
Typhoon LS-500
The ultrasonic domestic cockroach repeller “TYPHOON LS 500” has been in production for more than 10 years. During this time, the device has been constantly improved, and this product is the latest development. In the manufacture of the repeller, high-quality components of Russian and foreign production are used. Each device undergoes a cycle of tests and monitoring of compliance with the stated technical characteristics.
The first signs of insect disappearance are observed after 1-2 weeks of continuous work. Complete disappearance is observed after 3-4 weeks of continuous operation of the device, after which it can be turned on in a cyclic mode: for example, at night, when insect activity increases.
WK-600
The Belgian ultrasonic repeller Weitech WK-600 is a powerful device with nine operating modes for the most effective fight against specific types of rodents and insects, including cockroaches. Provides impact on a large area up to 325 square meters. m. A special algorithm for generating non-repeating signals makes it impossible for pests to get used to the effects. Equipped with two speakers and a regulator of the intensity of emitted ultrasound. In many modes it operates absolutely silently, so it does not interfere with the work and rest of people around you.
Since the Weitech WK-600 can be configured for mixed sonic-ultrasonic and pure ultrasonic radiation, it can be used both at home and in industrial environments. 9 operating modes allow you to select the most optimal frequency and radiation power to repel specific pests. There is a silent operating mode - you can turn off the audio frequency and use exclusively ultrasonic signals (over 20 kHz).
Will save you from almost all pests! It affects not only rodents (mice, rats), but also insects: cockroaches, fleas, moths, spiders, ants, etc. But it is also expensive, about a hundred euros.
Riddex Repeller
The device has an affordable price, so it is accessible to all segments of the population. Its power allows you to protect a room of up to 200 square meters. The device has a settings regulator, which allows it to be used in various conditions.
Banzai LS927
The Thai ultrasonic domestic cockroach repeller has earned the trust and recognition of many people for its good results. The only drawback of the repeller is that it is not recommended to be placed near pets or near the bed. The sound produced by the device is quite loud and unpleasant.
EcoSniper
The manufacturing country of Hong Kong presents a magnetic resonance cockroach repeller. The device generates low-frequency waves that have a detrimental effect on the nervous system of cockroaches. As a result of this influence, insects leave the problem area. Many users point out the lack of efficiency of the device.
The device has analogues:
- Ixus KY-6182 is a budget option with similar characteristics. Sold in online stores.
- Zenet XI-90.
- Air Comfort XI-90.
GRR09
This device generates ultrasonic waves in 3 modes and protects rooms with an area of up to 40 square meters.
Using the switch, the necessary operating modes are selected to ensure the fight against both insects and rodents.
Zenet XJ-90
The coverage area of this ultrasonic cockroach repeller is 30-40 square meters. The manufacturer offers stylish design and long service life. However, it is important to keep in mind that this device is a modification of the Air Comfort XJ-90, which has already been poorly effective against cockroaches and has earned a bad reputation.
hail
This device from a domestic manufacturer is designed to combat cockroaches, rodents and other insects. The principle of operation is the same as that of other models. However, the device differs in some features. For example:
- The device is reliable.
- And effective.
- Has a long service life.
- Easy to use.
The Grad device is in high demand due to the fact that:
- The device protects a large area, up to 550 square meters.
- Has silent operation.
- Differs in compact sizes.
- It runs on either batteries or a car battery.
Magnetic resonance repeller AR120
The device with the strange name AR120 is declared by the manufacturer as magnetic resonance. This means it is capable of creating low frequency waves, and it is these waves that will torment the cockroaches, create discomfort for them, surviving the insects from your home once and for all.
It is inaudible to the human ear, does not pose any danger to animals, and begins to act almost immediately after switching on. According to the manufacturer, the device will leave absolutely no chance for the small, mustachioed inhabitants, but buyers have a slightly different opinion.
Judging by the reviews, the device really gets rid of cockroaches, but only in the room where it is turned on. Apparently, it's all about the small radius of action.
Tips for choosing the right model
When choosing an ultrasonic repeller, experts advise paying attention to the following points:
- In the case of a residential apartment or house, purchasing a heavy-duty device is not a good idea. Or residents will have to leave the premises while the device is operating (which is 3-4 weeks). On the other hand, a device with low power is less efficient;
- There are repellers with an impact area of up to one square kilometer, but such devices are again recommended to be used only in non-residential premises and open spaces. An alternative option is several repellers with an impact area of 25–50 square meters, one per room;
- In order not to run into fakes, it is recommended to purchase gadgets in specialized stores or from official dealers of the manufacturer.
A few words about alternative devices
Among the traps for killing cockroaches, the most popular are:
- 1. Adhesive: the simplest, cheapest, but ineffective with a high degree of contamination. In addition, they can pose a certain danger to small children and pets. Available in the form of cardboard houses with an adhesive floor.
- 2. Insecticidal house traps: their advantages include safety and ease of use. Disadvantage: short validity period. A poisonous “treat” awaits the cockroach inside the trap. Having eaten it, the insect does not die immediately, but manages to reach its relatives, who will be poisoned by its toxic remains.
- 3. Electrical traps. These are quite simple devices, which are a plastic or metal container with a conductive bottom. Attracted by the smell of the bait, insects climb into the trap through a small hole in the body and, closing the contacts with their bodies, die under the influence of current.
There are many ways to fight cockroaches, the choice is up to the buyer!
How to make an ultrasonic repeller with your own hands
You can assemble an ultrasonic repeller with your own hands if you have at least basic knowledge of radio electronics. The schematic diagram of such a device is shown below.
The specified parts can be replaced with any domestic or imported analogues
As you can see, the device includes thirteen elements, namely:
- fixed resistors R1, R2, R3, R4, R5;
- trimming resistor R6;
- piezoceramic sound emitter BQ1;
- transistors VT1, VT2;
- non-polar capacitors C1, C2;
- diode VD1;
- switch S1.
Parts can be purchased at a radio store or, if possible, obtained from an old radio or TV. You will also need foil PCB for the printed circuit board. The latter is made by chemical etching.
You can do without making a printed circuit board by mounting it using the hinged method.
The key elements of the device are transistors VT1, VT2, which generate an electrical signal of the required frequency and power, and a piezoceramic speaker BQ1, which directly emits ultrasound. Trimmer resistor R6 adjusts the frequency of the ultrasonic signal. Toggle switch S1 turns the device on and off. The power source is a battery (battery) or power supply. The circuit operates stably at a voltage of 4.5–12 V.
According to reviews from users who assembled this homemade ultrasonic repeller, the desired effect was observed against both insects and rodents. That is, the device is universal. In this case, it is important to select the required ultrasound frequency as accurately as possible by connecting an oscilloscope to the output of the device.
The finished board can be mounted in any suitable case
The mechanism of action of electric repellers
The Pest Reject device is an ultrasonic repeller of cockroaches and other types of pests (mosquitoes, rats, flies), generating high frequency waves. According to the manufacturers, this effect on the nervous system of “uninvited guests” forces them to leave the house in panic, fleeing from the corresponding sound.
However, the reliability of such information remains unverified, so you should not get your hopes up too much prematurely. Numerous reviews about the device against cockroaches on the Internet confirm the effectiveness of this device, which makes it worthy of attention.
Electromagnetic devices
Electromagnetic repellers use a different principle of influencing pests. The operation of this class of gadgets is based on the generation of low frequency electromagnetic waves. The radiation spreads along the electrical network wiring, thus covering all rooms in the house where electricity is installed.
Just like ultrasonic devices, electromagnetic repellers only affect cockroaches while they are turned on.
Household appliances that emit low-frequency electromagnetic waves are often not powerful enough to seriously harm insects. In particular, this is due to the strict safety requirements. An increase in output power has a positive effect on the effectiveness of repellers, but at the same time the danger of exposure to radiation increases.
Powerful electromagnetic repellers can be used indoors only in the absence of people, so their use has become more widespread in industrial enterprises, warehouses and bases. However, even quite expensive professional devices do not provide a 100% guarantee of complete elimination of pests.
Inexpensive and ineffective household repellers can be used as part of comprehensive control and prevention of cockroaches together with insecticides.
EcoSniper AR-120
The AR-120 model is a device using the magnetic resonance radiation principle. The device operates stationary.
According to the manufacturer, studies have shown that EcoSniper AR-120 does not have a harmful effect on humans and domestic animals, while being a powerful irritant of the nervous system against pests such as:
- ants,
- cockroaches,
- fleas,
- spiders.
The EcoSniper AR-120 device may be useful where it is not possible to get rid of cockroaches using traditional methods.
The device does not emit any harmful chemicals. Can be used simultaneously with insecticides. Other features include:
- no influence on the operation of electrical wiring and other devices,
- the device does not generate radio interference,
- There are built-in indicators to monitor the operation of the gadget.
EcoSniper AR-120 can be used at such facilities as:
- Living spaces,
- public catering places (including catering units),
- kitchens,
- clinics,
- warehouses and bases,
- farms and livestock farms.
Reviews about EcoSniper AR-120
I liked the fact that the repeller acts not only with ultrasound, but also propagates waves along electrical wires, that is, exactly where these parasites crawl. What must I say, in the first 2 weeks the result was very doubtful, of course we were warned that we needed to wait 2-4 weeks for the effect, but like a real Russian person, I want everything at once! In general, after 2 weeks of waiting, we began to get the first results, the cockroaches became fewer and fewer, and after a month they completely disappeared. So far we have been living without problems for 2 months, we do not remove the repeller from the socket, it does not interfere, let it be for prevention.
sabinaole
https://otzovik.com/review_3309697.html
We moved to a new rented apartment, it seems to be in good repair, entrance. But the neighbor let us down, he got a drunkard who didn’t have any living creatures in his apartment. People came to him to poison his insects, and they rushed to us! My wife and I grabbed our heads, we were already getting ready to move out - who would like such a neighborhood? We decided to try the cockroach repeller, of course we expected the effect from the first day (you need to read the instructions properly), we were even upset that nothing happened in the first 3 days. But on the fourth day there were fewer of these bastards! And after 2 weeks they disappeared completely!
Ivan
https://www.eco-sniper.ru/product/ekosnayper-ar-120-magnitorezonansnyy-statsionarnyy-otpugivatel-tarakanov
Riddex Pest Repeller 1468
This is perhaps the most advertised device for repelling insects and rodents that uses electromagnetic radiation. The manufacturer promises stunning results in just two weeks, however, according to user reviews, the device actually does not function very effectively.
The electromagnetic device Riddex Pest Repeller 1468 repels pests without killing them
Riddex Pest Repeller can be used:
- in any residential premises,
- at public catering points,
- in any non-residential premises.
The device can be used against:
- rats and mice,
- cockroaches, bed bugs, fleas and spiders.
The device remains operational at temperatures from -30 to +40°C.
User reviews
We bought this repeller for cockroaches, but it turned out to be a repeller, there were even more cockroaches, and they gathered in crowds on this repeller. Don't trust advertisements and salespeople.
lisi4ka-lis
https://otzovik.com/review_1126945.html
Riddex was recommended to us by friends whom we visited and noticed this device. They said the cockroaches had completely disappeared. We ordered from the online store and waited. I dreamed that as soon as I plugged it into the socket, I would see cockroaches dying in convulsions and their complete destruction. But it wasn't like that. They connected it, it worked for 2 months. It was promised that in 2 months the cockroaches should disappear, but they kept running and running. I turned it off and put it in a drawer. They started poisoning in other ways, with dichlorvos, poison from the Colorado potato beetle, they already planned to call the sanitary and epidemiological station, so another 3 months passed. And then I remembered about Riddex, I remembered that when it was connected, there were still fewer cockroaches. We plugged it back in, and then I noticed that it was still working, I constantly found dead cockroaches on the floor, they began to crawl less than before. But they are not completely destroyed, during the day they are not visible at all, and at night there are a couple of them running around in the kitchen, which I kill whenever possible.
https://irecommend.ru/content/vse-taki-rabotaet-no-ne-tak-kak-khotelos
EMR-21
The electromagnetic repeller EMR-21 is a universal device and will help you cope with such annoying neighbors as rodents and harmful insects.
According to the manufacturer, EMR-21 is characterized by maximum efficiency and safety
Two LEDs of different colors serve as indicators of the repeller's operation. Green lights up when the device is turned on, red signals the beginning and end of the working cycle. The instructions for use for the device emphasize that it is not advisable to use the gadget in a room where there are decorative rodents. No negative effects on humans during operation of the device have been identified.
Reviews of EMR-21
It helped me, all the cockroaches went to the neighbors. I also offered them, but they don’t have the money yet. We live in a hostel.
Aliev A.A.
https://www.otpugivately.ru/katalog-tovarov/list/ot-tarakanov/otpugivateli-tarakanov/otpugivatel-tarakanov-emr-21
We live in a private house in a village, where there are of course a lot of insects and whatever you want, these are ants, flies, mosquitoes, cockroaches, and various bugs. With the birth of the baby, we immediately bought an ultrasonic repeller, we have been using it for more than a year, it works effectively and we forgot what insects are in the house, the baby and we sleep peacefully at night, forgetting that a mosquito or fly might fly in, nothing interferes with our sleep. It is also very convenient, the repeller glows like a flashlight at night, everything is visible, the baby has already grown up and we don’t have to turn on the light at night.
Inga
https://vrednet.ru/product/elektronnyj-otpugivatel-myshej-krys-i-nasekomyh-emr-21-elektromagnitnyj/
Table: characteristics of electromagnetic devices
| Model | Nutrition | Impact area | Price |
| EcoSniper AR-120 | 220 V | up to 80 sq. m. | 1900 rub. |
| Riddex Pest Repeller 1468 | 220 V | up to 200 sq. m. | 700 rub. |
| EMR 21 | 220 V | up to 230 sq. m. | 1200 rub. |
Measures to prevent the appearance of cockroaches
It is not enough to install cockroach repellers; you need to create the most uncomfortable conditions for the subsequent appearance and reproduction of pests. As soon as domestic cockroaches appear, you should get rid of the uninvited guests. Prevention is as follows:
- Conduct a general cleaning of the premises (if possible). Remove food from public access, shake all bags of cereals and pasta. The easiest way is to place supplies in airtight glass or plastic containers. Pay special attention to bread, pastry and sugar - these are the favorite delicacies of pests.
- Check the pipeline for leaks. The main areas where insects are located are damp and dark places. Cockroaches need a source of water for rapid growth and raising offspring.
- Do not leave dirty dishes with food out overnight, put food away, clean out cabinets, and keep the kitchen, bathroom, and powder room clean. Crumbs on the floor will quickly attract hordes of pests, but getting rid of them will be more difficult.
- In damp rooms, ensure good ventilation. Condensation on the walls, remnants in the soap dish, rot in the area of pipe joints, mold - all this is the favorite food of insects.
If a garbage or ventilation shaft in a multi-story building is clogged and has not been cleaned for a long time, it is a breeding ground for insects. A cockroach repellent device will help here for a short time. To clean the channels, be sure to call a technician from the management company. In order for the cleaning to be done quickly, you need to write an application addressed to the director of the management company - according to the law, the director is obliged to respond to the signal and put the common property in order as quickly as possible.
It is interesting that in private houses made of wood, cockroaches practically do not appear. But here you can find various woodlice, spiders and other equally unpleasant guests in abundance. The electronic repeller also works against these “neighbors”, and at the same time will prevent the appearance of “red mustaches”.
Fumigators - cockroach repellers
The operating principle of electrofumigators is based on heating special chemicals and their subsequent evaporation into the air. Evaporation negatively affects the sense of smell of insects. There are a lot of options for carriers of irritating chemicals, since the operation of the devices is based on a single principle.
Inside the device there is a ceramic element with a spiral. During operation, the latter is heated to a temperature sufficient to slowly evaporate the contents of the carrier.
Fumigators that work well against mosquitoes work poorly against cockroaches
Manufacturers of such devices claim that their devices are safe for humans, but the odors emitted when the poisonous plate is heated or the liquid evaporates are quite pungent. Vapors can cause people to feel worse, so being in the same room with a working electric fumigator is extremely undesirable. After turning off the device and ventilating the room, the effect on pests stops.
Despite all the disadvantages, electrofumigators are not without steady demand in the market. This is due to their relative effectiveness and reasonable price.
By the way, much more effective aquafumigators for the most part are not repellents, but work to exterminate pests.
Reasons for the ineffectiveness of the drug against cockroaches
People's opinions on this matter differ radically.
The first one speaks of a good result after using the device, that cockroaches disappear after 6 days of using the device. The latter claim that in order for cockroaches to leave the apartment, the device must operate around the clock. Still others even say that this is a useless device. Why do people's opinions on this matter differ so much?
- Wrong approach to choosing a unit.
When you choose a device for your home or apartment, you need to take into account such characteristics as: radius of influence of the device, frequency of wave action, area of the territory and others. - Incorrect installation of the unit.
It is important to know some nuances before installing a repeller in one place or another: ultrasound does not pass through walls and it does not matter what material your partitions in the house are made of; Ultrasound can be absorbed by furniture and hard objects. Therefore, it is important to install it correctly in your home. - Brand.
It is important to know which devices are time-tested and purchase exactly those. After all, there are now many different fakes on the market and it is very easy to make a mistake with your choice. Below is a list of the most reliable and proven units.
When purchasing, you should also read the instructions offered by the manufacturing company. If you install and use it as written in it, then there will be no problems and everything will work smoothly.
Reviews
Reviews about the use of ultrasonic and electromagnetic repellers have different responses, since much depends on the degree of contamination of the room, correct use and selection of the appropriate device.
I once tried an ultrasonic repeller. Yes, it works, but not for long. When its effectiveness ends, the Prussians appear again. So I decided to carry out chemical treatment together with my neighbors and let’s see what comes of it.
Marina, Saratov
It so happened that the cockroaches themselves disappeared, since we live on an avenue where there are a lot of different communications. They most likely couldn't handle all the noise and we haven't had them for several years.
Elena, Moscow
General characteristics of Prussian repellent devices
Despite the assurances of manufacturers who convince a potential buyer of the effectiveness of this type of device, you need to understand that in fact they do not have such a powerful effect on cockroaches.
It’s worth starting with the mechanism of influence of the device.
The device for cockroaches in the PestReject socket and other similar devices are divided into 2 large groups:
- Ultrasonic wave generators.
- Electromagnetic field generators.
For any of these mechanisms to effectively influence the insect body, it is necessary that it use similar properties during its existence. This is how mosquitoes emit ultrasonic waves when communicating with each other, and thus transmit signals about approaching danger. Such devices have a very strong impact on them.
Since cockroaches do not use ultrasound or electromagnetic radiation during their existence, these mechanisms of influence have practically no significance for them. Of course, it is possible to emit frequencies so high that they will actually bring a lot of discomfort to insects, however, in this case, humans will experience similar problems.
In addition, it is very important to understand that various electrical devices are purely deterrents. Using them cannot talk about the destruction of pests.
At best, insects simply move to an area that is not covered by the device’s coverage area. When the latter is unplugged, the Prussians often return to their former habitats.
How to properly install and use electronic repellers?
Choose a tall outlet. The ultrasonic waves emitted by the repeller cannot pass through obstacles such as furniture or walls. Therefore, it is better to install the device as high as possible. Ultrasound will flow from top to bottom without encountering obstacles.
: It is not recommended to use powerful devices in bedrooms, living rooms, or in the presence of pets. In all cases, high-frequency ultrasound affects the brain of humans and animals, which, with regular use, leads to nervousness, loss of normal sleep, and fatigue. The optimal solution in this situation is to use cockroach traps made from cans, bottles or tape. You can find detailed instructions on how to make a cockroach trap yourself in this article.
