The action of the devices is not aimed at the destruction of insects, as a result radiation cockroaches are adversely affected begin leave room.

Cockroach repellers

All electronic devices can be conditionally divided into the following varieties:

• ultrasonic;
• magnetic resonance.

Main advantage electronic repellers is easy to use - they must be plugged into an outlet (install rechargeable or conventional batteries), the distance from the floor should be within 20-40 cm.

They are expensive conventional means against cockroaches, the average cost can be from 500 to 950 rubles. More expensive devices are designed for large areas (warehouses, storage facilities), it is not recommended to use them in apartments or houses.

electromagnetic

Under the influence of electromagnetic impulses, pests hide as far as possible from the source. The electronic cockroach repeller can be used for as long as you like - it does not harm the health of people and animals.

The electronic remedy for cockroaches in the apartment must be plugged into a socket, the repeller functions on low wave frequencies which affect the central nervous system of cockroaches and other insects.

Advantages:

• compact dimensions;
• no requirements for the creation of special storage conditions;
• efficiency;
• absence of dead insects;
• security.

The optimal temperature for using an electromagnetic repeller is the range from 0 to 40 degrees; to enhance the effect, you can turn on several devices at the same time.

To shortcomings can be attributed to a fairly high cost.

Ultrasonic

The ultrasonic cockroach repeller emits sounds that are inaudible to humans. high frequency waves, extremely unpleasant for cockroaches.

The effect of ultrasonic waves on insects has a scientific justification - mosquitoes that hear sounds similar to those made by bats leave the place of its occurrence in fear.

Ultrasound also helps against cockroaches, this principle is applied in the manufacture of devices. Their functioning is based on an integrated microcircuit, which includes the components of a trigger and a multivibrator, as a result, antiphase and symmetrical signals are formed at the outputs.

These outputs are connected to a sound source, which is used as piezoceramic emitter. According to reviews, the device helps to get rid of not only cockroaches, but also midges, domestic ants, etc.

Advantages developments:

• ease of operation;
• non-toxicity, safety for people and animals;
• the possibility of processing in the presence of people;
• long range - the action of the device installed in one room extends to the entire apartment;
• extended spectrum of action - not only cockroaches die, but also other insects.

Despite the large number of advantages, the ultrasonic cockroach trap also has limitations:

• rather high cost;
• questionable security.

Rodent and cockroach repeller riddex pest repelling aid

The principle of operation of the repeller is based on connecting to the network, after connecting the wiring turns into repeller, under the influence of which not only cockroaches scatter, but also fleas, ants, rats, mice.

The device is also equipped with flashing LEDs, which have a negative effect on pests. The area of ​​​​impact of the riddex pest repelling aid reaches 200 sq.m., unlike other models, its no need to install in multiple rooms.

The device from cockroaches must be plugged into the outlet and kept in the network until the insects completely disappear, in the future it is recommended to occasionally turn it on for preventive purposes.

Pests begin to show concern after the first week, mice and rats disappear after 14-20 days, insects - after 7-12 weeks. The device is suitable for use in residential and public areas, repeller absolutely safe for health, does not affect the operation of electrical engineering.

For more information about this repeller, see the video:

Do-it-yourself ultrasonic cockroach repeller

To create a repeller with your own hands, you will need a special scheme; this can only be done if you have certain knowledge and skills.

Required items:

• Toggle switch and diode d;
• capacitors C1, C2;
• UZ element for sound reproduction (piezo emitter);
• transistors T1, T2;
• variable resistors and R1, R2, R3, R4, R5.

The function of the resistors is to limit the current strength and regulate the voltage in the network, the variable resistor is designed to adjust the frequency of ultrasound at the output.

The piezo emitter can be any from any manufacturer, as well as a toggle switch, with which the device is turned on and off.

Capacitors and transistors provide the creation frequency contour together with resistors, the diode is designed to protect the device from incorrect switching on.

To create a board, blanks for radio amateurs are required; in a repeller of this type, it should be possible to control the power and frequency of the waves, which will make it possible to use the device to repel various types of pests.

For these purposes, it is used variable resistor, in parallel to which the frequency meter is connected, the power depends on the power source (power range 1.5-12 V).

With self-production, such a device will cost only 400 rubles, while the repeller can be used to fight different types of insects, for this it is enough to switch the frequency with a resistor.

Conclusion

Electronic scarers are considered most effective way to deal with cockroaches, the main advantage is safety for health and ease of operation.

Insects don't get used to them, as is the case with chemicals. Repellers are ultrasonic and electromagnetic, a simple model can be made by hand.

Electric circuits of ultrasonic repellers of rodents, dogs

The main purpose of the repeller is the fight against moles in summer cottages, lawns, vegetable gardens, flower beds. The electronic mole repeller "Tornado OZV.01" is completely safe for people, plants, beneficial underground insects and worms and is the most optimal and environmentally friendly tool for fighting moles.

Tornado OZV.01 is required for use in open areas, so the repeller is waterproof, protected from rain and snow.

Using the electronic circuit of the repeller, you can assemble the repeller with your own hands

1 - body; 2 - bushings; 3 - plug; 4 - board; 5 - contacts; 6 - spring; 7 - cork.

Schematic diagram of a rodent repellent generator

• The electrical circuit of the generator includes consists of a generator of ultrasonic oscillations (C3, C4, DD1.3, DD1.4, R3, R4), a low frequency modulator (C1, C4, DD1.4, R1, R2), a power amplifier on transistors VT1- VT3, the emitter, which is used as a high-frequency loudspeaker 4GDV-1.
• The generator emits frequency-modulated oscillations in the range of 15….40 kHz. The frequency can be adjusted by resistor R4, the modulation frequency is controlled by resistor R2 within 2….10 Hz.
• If you set the SB1 contact in such a way that this contact closes in case of unauthorized entry into the room, the generator can work as a burglar alarm siren, since it starts to emit modulation in the oscillation frequency in the range of 1000 ... 2000 Hz.
• It is important that during prolonged work in one frequency range, rats get used to it, so you need to change the radiation parameters with resistors R2-R4 2-3 times a week. Or connect capacitor C4 to a piece of wire that creates an additional capacitance that changes with temperature and humidity. Then the frequency will change randomly.

Generator circuit

The electrical circuit of the device for repelling rats and mice

The rat and mouse repeller is designed to repel rodents in urban areas and in the country. It can also be installed in the car to protect the wiring. The principle of operation of the model is based on the generation of ultrasonic waves with a frequency of about 23 kHz. Most rodents do not tolerate the sound of this frequency and experience anxiety, leave their habitats. Recommended case BOX-G020. The dimensions of the printed circuit board are 53x28 mm.

Specifications:

• action area,
  20 m2;
• supply voltage,
  9 V;
• consumption current,
  50 mA;
• working frequency,
  16…28 kHz.

Wiring diagram of the dog repeller

• A simple version of the dog repeller (Fig. 1) is assembled on one digital microcircuit (DD1) and five transistors (VT1~VT5). An infrasonic generator is made on logic elements DD1.1, DD1.2, resistors R1, R2 and capacitors Cl, C2. It is a symmetrical multivibrator that produces rectangular pulses with a frequency of 1.5 Hz.
• The second symmetrical multivibrator, built on elements DD1.3, DD1.4, resistors R6, R7 and capacitors C5, C6, is an ultrasonic generator, the frequency of rectangular pulses of which is 20 kHz and periodically (after 0.66 sec) increases 4 times. A smooth periodic "rise" of the ultrasonic frequency upwards performs a part of the circuit containing resistors R3-R5, transistor VT1, capacitor C3, diodes VD1.VD2.
• Created at the output pins 10 and 11 of the DD1 microcircuit, ultrasonic rectangular waves have low power. They are amplified in power by a push-pull bridge amplifier made on VT2-VT5 transistors. The emitter load of this amplifier is a BF1 piezoceramic emitter.
• Ultrasonic vibrations (modulated by infrasonic) are excited in it after pressing the button SB1, which performs the "on" function.
• The power supply circuit of the DD1 microcircuit is protected from accidental "polarity reversal" of the GB1 battery by the VD3 diode, and the filter capacitors C4 and C7 provide high-frequency and low-frequency oscillations through the power circuit.
• When instead of the piezo emitter SP-1, use the car piezo siren ACT-10, the range of the repeller will increase significantly.
• The GB1 battery can be assembled from six to ten galvanic cells (316), D-0.25 batteries, or a ready-made 12-volt L1028 battery or a 9-volt Krona, Corundum can be used.
• The K561LA7 chip can be replaced with 564LA7, K176LA7,
  K1561LA7.
• Diodes VD1-VD3 - any silicon small-sized, transistor VT1 - any silicon low-power with a base current amplification factor of at least 30.
• Transistors VT2, VT4 and VT3, VT5 can be replaced by any of the KT3102 series
  and KT3107.

When assembling a dog repeller, you can not use microcircuits at all, then the number of transistors will increase to nine. Fig. 2 shows a diagram of the second version of the repeller, more precisely, its part (the rest is according to Fig. 1), in which the infrasonic generator consists of transistors VT6, VT7, capacitors C1, C2 and resistors R1-R4, and ultrasonic - but transistors VT8 , VT9, capacitors C4, C5 and resistors R7-R10. The ultrasonic frequency "removal" circuit has resistors R5, R6, a capacitor C3, a transistor VT1 and diodes VDI, VD2.

So that when setting up, which mainly consists in selecting the resistance of resistors R3 (Fig. 1) or R5 (Fig. 2), you can determine its operation by ear, for a while, in parallel with the capacitor C4 and C5, two capacitors with a capacity of at least 6800 are connected by soldering pf each.

Published: 2013-06-13

Mod.: 2017-08-31

• 2590 rub.

  Ultrasonic rodent repeller SD-002 has a protection area of ​​up to 400 square meters. m. It is used against rats and mice, and repels cockroaches, ants and other insects. Food: from a network.

• 1790 rub.

  3 types of waves. The device is ideal for use in small residential and non-residential premises, operates on 220V and is effective against rodents and crawling small insects.

• 2100 rub.

  Tornado OG.08-400 is designed to protect premises from rodents. For installation in granaries, warehouses, domestic and industrial premises. Effective area of ​​action 400 sq.m. m., power supply: network 220 V.

• 3150 rub.

  Tornado OG.08-800 is designed to protect premises from pests. Repeller of rodents, rats, mice for tunnels, underground utilities and other elongated objects. Effective area of ​​action 800 sq.m. m, power supply: network 220 V.

• 1500 rub.

  For installation in all types of residential and non-residential premises. It has a wide angle of ultrasound radiation and two modes of operation (sound and silent). Effective area 400 sq. m.

• 1300 rub.

  For installations up to 400 sq. m. For premises where people are constantly located, and for non-residential facilities with temperatures in the range from -15 to +45 degrees. Silent.

• 2000 rub.

Ultrasonic cockroach repeller reviews may be different. It depends on its principle of operation and other characteristics. The choice of device is made taking into account the mechanism of its action. Devices of ultrasonic force work against cockroaches, mice, rats, moles, mosquitoes, dogs. These are special electronic devices that generate ultrasound. They are intended to fight, scare away or completely destroy pests of the economy. The effectiveness of this device has not yet been proven. Many world laboratories and sanitary and epidemiological stations still dispute this issue.

The choice of device is made taking into account the mechanism of its action.

An ultrasonic device from cockroaches is a very common way to fight. Cockroaches are carriers of many infectious pathologies (salmonellosis, dysentery, amoebiasis, giardiasis). In addition, insects bring significant harm to the house and the products that are in it. Therefore, the primary task of each person is to fight with such pests with all his might.

The presence of rodents and cockroaches is the most common and difficult to control problem. Pests greatly interfere with city apartments, industrial and commercial facilities.

The penetration of mice and rats into the house becomes a big problem for its inhabitants. Rodents not only spoil food, things and furniture, rats and. There are many ways to deal with gnawing pests, ranging from chemical and ending with folk recipes. An excellent alternative to all these methods can be, whose work is to emit high frequency sound waves. Among the popular brands, devices stand out. Given the rather high cost of the device, many craftsmen have learned how to assemble an ultrasonic rat and mouse repeller with their own hands.

How does it work

The work of an ultrasonic repeller is based on the generation of signals that are completely inaudible to a person. For rodents, such sounds cause great discomfort, affecting their nervous system. The frequency of mice repelling ranges from 30 to 70 Hz. Periodically, it changes, which is not addictive in rats and mice.

On a note!

Ultrasonic repellers can scare away not only rats and mice, they are also effective against harmful insects (cockroaches, ants).

There are also devices that emit electromagnetic waves. Unlike previous devices, they are able to penetrate interior panels, repelling pests at a considerable distance.

Ultrasonic repellers are very convenient and economical, and also have a long service life.

What do you need

There is no need to spend money on factory devices, since it is quite possible to make a mouse and rat repeller on your own. You can make a device on the ne555 or ne556n timer. Microchips will produce a signal that will scare away rodents. To assemble an ultrasonic device, you will need the following parts:

• resistors R1, R2 (for adjusting the ultrasound output level) - 2 pcs each;
• resistors R3, R4, R5 (to reduce the voltage in the mains) - 1 pc.;
• capacitors C1, C2, C3 (for forming a frequency circuit) - 1 pc.;
• transistors of the GT404, KT361 and GT402 brands (for forming a frequency circuit) - 1 pc.;
• diode - to protect the device in case of incorrect connection to the network;
• piezo emitter - for the production of an ultrasonic signal;
• speaker;
• battery;
• toggle switch to turn the device on and off.

The scheme of the ultrasonic rodent repeller is presented below.

Assembly rules

The scheme of the rat and mouse repeller is drawn up on textolite. In the absence of such, everything is connected by wires. Separate wires are output to the battery and speaker. The assembly sequence of the repeller circuit is as follows.

1. Checking the drawing.
2. Stripping wires, processing them with tin and rosin.
3. Consistent soldering of parts.
4. Power supply connection.
5. Testing.
6. A homemade device is placed in a suitable case or box in which holes are made in the speaker area.

You should not expect instant results from the operation of the device. The effect will be noticeable after 2-3 weeks of continuous operation of the electronic device. It is possible to achieve a full-fledged result in mice after an incident of 2 months.

On a note!

When using an ultrasonic device against mice and rats, it should be remembered that ultrasound is repelled from a hard surface and absorbed by a soft one. Therefore, its use will be more effective in a room not crowded with objects. So that in an apartment or, it is necessary to use devices of this type in all rooms at the same time, not giving rodents a chance to move from one room to another.

Cockroaches are probably eternal, indestructible and multiply at an incredible rate. Most of all, they annoy the residents of old apartment buildings, in which the most motley people can live. Since ancient times, there have been many folk and chemical means of dealing with these ubiquitous insects, but almost all of them are dangerous for people and pets.

They need to be constantly updated, and cockroaches get used to them. Therefore, ultrasonic ones are in demand today among gullible buyers, which, however, are very ambiguous. This is not to say worse.

The principle of operation of ultrasonic repellers

Ultrasound can repel insects, science has proven this, but ... The fact of the matter is that there is a big “but”. Only those midges and other mosquitoes that communicate with each other using ultrasonic signals can be scared away with ultrasound of a certain frequency. The frequency of a hazard warning signal is simulated and the operation of the device is based on it. When connected to the network, it begins to create ultrasonic waves, from which insects scatter or scatter. To whom is given.

As for cockroaches, then, firstly, they need to be destroyed, and this cannot be done with ultrasound. Secondly, these insects do not communicate with the help of high frequencies, they do not have such organs. Therefore, reviews on ultrasonic cockroach repellers are mostly negative. Well, they don’t hear mustachioed danger signals, what can you do.

The effect of ultrasound on cockroaches

It is impossible to say that ultrasound does not affect them at all. Works, only high power. But a person also feels such frequencies, and his four-legged pets too.

Experiments show that high-frequency signals of a certain power affect the general condition of the cockroach, disrupt its nervous system, but in a completely unpredictable way. It would be nice to stop breeding, and then the result. But no, the number of insects is reduced very slightly.

Therefore, reviews of ultrasonic cockroach repellers are often replete with complaints that pets stop eating and their owners stop sleeping. Most people have constant headaches.

The sellers of the devices recommend staying as far as possible from the included repeller, however, they talk about this already when the indignant buyers are trying to return the harmful product. And then they continue to sell the most ineffective and harmless means of getting rid of cockroaches for people.

Manufacturers of ultrasonic repellers

It is clear that the market is filled with similar Chinese-made devices, and the attitude towards them is negative, rather, not from the lack of effect, but from the traditional rejection of the quality of goods from the Middle Kingdom.

But ultrasonic cockroach repellers, reviews of which do not radiate friendliness, are produced in Taiwan, and in the USA and in Russia, moreover, enterprises whose products are quite effective in the fight against rodents, bats and mosquitoes.

Powerful expensive devices, as a rule, are universal and are designed to repel both insects and rodents from large areas, and receive positive reviews. But there is simply no need to buy a device of this class. Cheaper to get by with gel to kill cockroaches.

Universal rodent and insect repeller

The GRAD A-1000 PRO, an innovative professional device manufactured by the Russian Ayfo-Technology LLC, can operate in four different modes, two of which repel rodents, another one - mosquitoes, and another one is designed for other insects. "Grad" serves the area up to 1000 sq. m and removes any pests in two weeks of constant work. But its main purpose is the fight against rodents. And he copes with this task perfectly. Also good reviews on repelling mosquitoes. But specifically about scaring away cockroaches in the reviews we are not talking. Maybe because the weapon is too serious against them.

The Belgian ultrasonic repeller "Weitech WK600" operates in nine modes and serves an area of ​​​​more than 300 square meters. meters and in a wide emission spectrum of 2-50 kHz. Nobody buys it to fight separately with cockroaches. And the reviews contain little specifics, but users are satisfied with them. I would like to believe that, in addition to mice, mosquitoes and moths, cockroaches also go into the blue distances.

Ultrasonic cockroach repeller "Typhoon LS-500"

Reviews on it are numerous. But they cannot be called positive. No, not so - a pleasant impression is made by the flashing of the light during the initial period of operation of the device. And somewhere out of thirty reviews, only in a tenth of the users were satisfied with the result - the cockroaches left them.

"Typhoon" produced by MNPF "Alex" is also a universal powerful repellent device for rodents and cockroaches. The manufacturer claims that special studies were carried out, and according to their data, the level of insect disturbance in the area of ​​​​the device is maximum.

And its action extends in a radius of eighty meters. The ability to install the device at a distance from the outlet is also considered a plus, because it is equipped with a long cord. The instructions state that the operation of the device does not affect pets.

On the Typhoon LS-500 ultrasonic cockroach repeller, reviews say that cats react painfully to his work, however, they get used to it over time.

Cockroach repeller "Tornado"

Another domestic device, more precisely, a series of devices - "Tornado".

An interesting model "Tornado OT.02" differs in that it emits not only high-frequency sound waves, but also light ones. Everyone who has had to deal with cockroaches knows how briskly these insects scatter when the lights turn on at night in the kitchen or bathroom, their main habitats. Maybe that's why this model is less common than other ultrasonic cockroach repellers, reviews.

"Tornado" scares away with light, not with ultrasound, but it scares away. And people are less willing to share positive impressions than negative ones.

What is especially interesting in using the Tornado OT.02 device is that it must be installed in a special way. Not only at a certain height, slightly above the work surfaces, but under the wall cabinets in the kitchen, but also at a certain angle to the vertical. That is, if this condition is not met for some reason, then the manufacturer is not to blame for the inefficient operation of the device.

However, there is a certain note of optimism in user reviews. Without much confidence, but they say that not immediately, but there are fewer cockroaches, although they don’t leave at all.

Cockroach repeller "EcoSniper AR-120"

This Hong Kong-made device is magnetic resonance and emits low-frequency waves, which are designed to have a detrimental effect on the nervous system of cockroaches, so insects must leave their homes. According to the manufacturer, the radiation is transmitted through the electrical wiring in the room, even hidden, but without knocking down the settings of home equipment and without creating interference. The main thing is to plug it into an outlet as close to the floor as possible.

The main idea that reviews contain on this ultrasonic cockroach repeller - "EcoSniper AR-120" does not help to get rid of cockroaches at all. And the spiders, against which the radiated waves must also fight, are also in no hurry to leave their native corners. True, some users speak positively about the silent operation of the device, and someone notes that especially large cockroaches leave, but the young unceremoniously walk right on the device.

And go and understand, either the nervous system is really looser in adult insects, or it is easier to destroy them with a slipper.

"Twin Brothers"

In online stores, an electromagnetic device Ixus-KY-6182 is sold, the manufacturer of which is modestly silent on the pages of sellers.

The reviews on the Ixus ultrasonic cockroach repeller do not contain even the slightest positive emotions, and there are few reviews themselves. The device is like two drops of water similar to Eco Spier, the description of its operation and characteristics in the instructions are almost the same, only it costs much less. Since it can only be purchased via the Internet, it is not worth dreaming about the effectiveness of its work.

Zenet XJ-90 and Air Comfort XJ-90 devices are the same twins. In fact, this is one ultrasonic cockroach repeller, the reviews for which are equally negative and harsh. They emphasize that the new name did not affect the efficiency of the previously tested and completely discredited device.

Cockroach Repeller Pest Reject

The electronic ultrasonic cockroach repeller Pest Reject is made in the USA.

The manufacturer, choking with delight, exalts the characteristics of his device with purely American optimism. And the coverage area is large - 220 square meters, and in a week you can already see the results. With such wonderful characteristics, the device is inexpensive. In theory, it should be snapped up like hot cakes and praised at every turn, but there are no reviews for it.

Most likely, because the instruction recommends using traps and gels at the same time during the first week of use. But if there are effective remedies in the form of gels, then why do we need a repeller? So that cockroaches develop a stable reflex - where ultrasound of a certain frequency awaits an indispensable and massive death? Then insects from generation to generation will pass on this science and quickly leave the dangerous place when the device is turned on? May be so.

Repeller "Banzai LS927"

On the Taiwanese device, to a greater extent than on the Typhoon ultrasonic cockroach repeller, the reviews are positive in terms of the effectiveness of the impact on insects. It is more powerful, and indeed in a month the cockroaches leave the premises. But the manufacturer honestly warns that the radiation is harmful to people and pets.

It turns out a kind of paradox: insects leave the kitchen, it's true, but they go to rooms where the appliance cannot be used due to harmful effects. In this case, why is it needed, you can completely use effective and inexpensive means, for example, low-toxic insecticides.

Do-it-yourself ultrasonic cockroach repeller

In the holy faith in the effectiveness of insect repellent using ultrasound, but at the same time being afraid of fakes, you can make a device with your own hands. True, this work is not for everyone. You need to understand radio engineering at least at the level of a school circle and be able to work with a thin soldering iron in order to assemble the device.

There is a scheme for an ultrasonic cockroach repeller with your own hands and is not uncommon. You don't even need to invent anything. Today, you can easily find diagrams (one of them is presented above for an example), and a list of necessary parts, and a detailed description of why they are needed, and the sequence of work. Radio components are not in short supply, they can be easily bought in specialized stores or on radio markets. You can make a repeller of the desired power and in practice test its effectiveness for little money, while enjoying your own creativity.

But the trouble is that the shortcomings of industrial devices will not go anywhere in a homemade product. The device will either be ineffective or dangerous to people. Moreover, its appearance will be far from perfect.

Finally

What can be said in conclusion? Effective ultrasonic cockroach repellers do exist. But these are powerful industrial devices, expensive and unsafe for people. There is no point in using them at home. High-power household appliances, like Typhoon or Banzai, work more or less effectively, but they are harmful to humans and their pets. And non-harmful devices are safe for all living things that do not perceive ultrasonic signals as a danger warning, including cockroaches.