Imagine having a high pitched fire alarm going off right beside your ear 24 hours a day seven days a week. What would you do?

Yes! I knew your answer. You’d go and find a safer location.  

The scientist has found amazing technology called ultrasonic these small little pesky and annoying pests from your home without using any chemical pesticides. 

You might be wondering how ultrasonic Pest Repellers works?

Keep Reading:

Pests are creatures of habit just like humans.  They have survived for thousands of years with the instinct of running away from things that they don’t understand or aren’t used to!

They are very scary creatures so when their environment gets disturbed in any significant way they tend to react by running away from it. 

In a nutshell: these repellents are used to give a signal to these pests that a dangerous predator is around and it’s coming after them.

There are hundreds of products available on the market, lets compare 5 products against each other.

Top Pick
Ultrasonic Pest Repeller Humane Mice Control Electronic Insect Repellent Reject Rodent Bed Bug Spider Rat Defender Home Animal Plug in 2 Pack
Bocianelli Ultrasonic Pest Repeller 6 Packs ,Electronic Indoor Plug in for Insects Mice Ant Mosquito Spider Rodent Roach, Good Repellent for Children and Pets' Safe 167
Thermacell Patio Shield Mosquito Repeller, Glacial Blue; Easy to Use, Highly Effective; Provides 12 Hours of DEET-Free Mosquito Repellent; Scent-Free, No Spray, No Smoke and Cordless
MaxMoxie Ultrasonic Pest Repeller
Bocianelli Ultrasonic Pest Repeller
Thermacell Patio Shield Mosquito Repellent
Safe for Kids/Pets ?
Prime Status
Top Pick
Ultrasonic Pest Repeller Humane Mice Control Electronic Insect Repellent Reject Rodent Bed Bug Spider Rat Defender Home Animal Plug in 2 Pack
MaxMoxie Ultrasonic Pest Repeller
Safe for Kids/Pets ?
Prime Status
Bocianelli Ultrasonic Pest Repeller 6 Packs ,Electronic Indoor Plug in for Insects Mice Ant Mosquito Spider Rodent Roach, Good Repellent for Children and Pets' Safe 167
Bocianelli Ultrasonic Pest Repeller
Safe for Kids/Pets ?
Prime Status
Thermacell Patio Shield Mosquito Repeller, Glacial Blue; Easy to Use, Highly Effective; Provides 12 Hours of DEET-Free Mosquito Repellent; Scent-Free, No Spray, No Smoke and Cordless
Thermacell Patio Shield Mosquito Repellent
Safe for Kids/Pets ?
Prime Status

Now scientist uses this instinct to your advantage. They use ultrasonic and electromagnetic frequency to imitate as if a fearsome predator is present nearby. Frequency used by this device is undetectable to humans but it’s high pitched irritating and extremely annoying for pests.

I did a lot of research online to see which electronic pest repeller actually works and shortlisted a few products out of hundreds. Reading this article might save you a lot of money.

Does Ultrasonic Repellent really works ?

There are some Side effects of Ultrasonic pest repeller, make sure you read it before buying these products.

If you are the kind of person who always looks for environmentally friendly pest control products, this article is for you! These products can save you a lot of money on pest control and you can still get rid of pests without using a drop of chemical. 

Don’t get me wrong. This is not a magic bullet. It can work in certain situations, for a specific type of pets and infestation. It should be used with integration of other pest control strategies. 

This device does works but I don’t want to give it an impression of  “Push button solution” 

There are of sleazy marketers pushing these products as all one solution for pest control. In reality, it doesn’t work like that. 

Jaipur National University conducted a study in 2016. They found that electronic pest repellent can work perfectly if used as a supportive method with other pest control strategies. 

 Dileep Kumar Tiwari, From Deptt of Electronics and Communications

This type of products releases ultrasonic sound on frequency (10-100 kHz) which humans can’t hear. But some kind of pests feel unpleasant and due to intense auditory stress, they move away from the device.

Another study done by Scientist at the University of Nebraska tested ultrasonic pest repellers to see if it helps in repelling rodents. They noticed a 30-50% reduction in movement activity which is pretty significant. 

When you do a meta-analysis of all the studies done in this area, you get mixed results which are even more confusing. That is the reason of different controversies about ultrasonic pest repeller.   

The overall majority of studies suggests that it works really well against rodents Spider and ants. 

However, some more studies are needed to prove its effectiveness across the board. There are some studies available but it was conducted by companies and product manufacturers themselves i think these studies aren’t credible which I didn’t want to include in the article because it seems pretty obviously biased towards the product and the technology.

I’d be interested to see any independent study on ultrasonic pest repellent efficiency (especially against roaches and other pests)  

Further Reading: Does Ultrasonic Repellent really works ?

Now let’s assume it only works for rodents, still, it is worth the money and effort. Because rodents can be a serious threat to your health and your building structure. 

Mice and rats can damage your wiring system because they have full access to your home electrical wiring.  They keep on chewing these cables to make space to enter your house. 

In the US all commercial buildings are required to use armoured cable which is rodent proof.  General users use Romex cable which is less protected and can be damaged by rodents pretty easily. 

The idea of this whole story is to pinpoint the issue, how dangerous rodents can be so if these repellents only work for rodents it well worth your time and money.  

Electronic pest repellent products are best for folks who do not want to use any pesticide in their house. You seem to be the same person 🙂 These devices can be utilized by the general public to repel mosquitoes,  rodents, spiders, ants, and other insects.  

Now lets deep dive into each individual product in details.

1. BRISON Ultrasonic Pest Repeller

Brison is electronic plug and play device which send electromagnetic and ultrasonic waves which disturb different pests and make them move away from your house. (As discussed above)

The sound waves this device pushes in their are undetectable to human ears. Once you plug the device it works quietly with a blue light indicator to make sure it is working. This device uses the same technology as I explained above.

It works against Mice, rats, and spiders. It comes with 2 pieces, you can use it in 2 different areas where you see an infestation.


Once you plug in the device it might see some bugs flying here and there, don’t worry once the device starts working, these bugs get out from their hiding places and start moving towards safer place (outside your home expectedly).

Some user has reported that it works for patio as well. So if you have a bug problem in patio (especially mosquitoes), you might consider using this device. It works very well in open area because ultrasonic waves can’t penetrate in furniture and other devices.

In open area, it gives you a very good range because there is no furniture, walls or any other barrier for waves to travel. The good thing about ultrasonic pest repeller is that you don’t have to deal directly with pest. It repels them and they go away, you don’t have to clean the junk or deal with pests all day long.

If you are working men or women and you don’t want to deal with cleaning up. This is a great option for you.

When you get back from work late at night, you don’t want to deal with mosquitoes and rodents. Just plug the device and get pretty good control on pests.

Rodent spread different types of diseases, funny enough they damage your clothes and fabric as well. A little investment can save you a lot of money on health and probably thousands of dollars.


The optimal coverage area is 600-800 sq ft, with a maximum coverage area up to 1100 sq ft. So if you have a large house you might consider using more than devices.

If you don’t want to buy more devices, i’d the advice to change its location every 2-3 days.

When you have no electricity ?

When you want to use it in a cabin or in your backyard you can use a AC outlet power bank. This product is rechargeable and you can easily plug the Pest Repeller.

2. Bocianelli Pest Repeller

This repeller is available in 6 packs so if you have a large house with many rooms, this is a good choice for you. Bocianelli is safe for humans and pets.

This device uses the latest chip technology which is different than other traditional electronic pest repellent products. It works for Mice, ants, and mosquitoes.


This device gives you a whopping 1600 sq ft range! It can be widely used in offices, gardens and other commercial places as well as big houses.

It isn’t recommended to be used in rooms because the waves can’t penetrate in furniture and walls. It is specially designed for open areas.

How To Use?

Simply plug the device in a socket and install it vertically 7-31 in away from the floor. Make sure there is no barrier between the device ( i.e curtains, furniture, etc)

It is better to use the device where you find an infestation, consider using extension wire if you do not have any socket available near the infestation area.

3. MaxMoxie Ultrasonic Pest Repeller

Max movie uses the same ultrasonic technology to push pests away from your home. This product comes with a 100% refund guarantee. So if you don’t like it for any reason you can ask for a refund.

Don’t worry if the pest population increased after plugging the device, this is an indicator that the product is working! Once these small little pesky pests are in dangerous and confused about ultrasonic sound, they work they’re up to find a better place.

This product works for Mice, spiders, roaches, ants, moths, and fleas.

This product seems to be quite popular among users. Most users reported on different e-commerce site about the efficiency of this product. Most retailers sold thousands of pieces with a lot of reviews.

As you already know these devices are pesticide free. So if you are the environment-friendly guy, it is a must-have for the summer season.

4. Thermacell Patio Shield Mosquito Repeller

Even though I included this one in the list but it is not an ultrasonic repellent. It is a mat based repellent specially designed for mosquitoes.

This model is specially designed for patio. And it works only for mosquitoes it gives you 15 sqft protection which might be more than enough if you want to enjoy some time in your patio. 

The good thing about this repeller is that it does not use DEET! It uses mats which you have to replace almost every day. Which worth the effort keeping the output in mind i.e spending quality time with your family in patio.

Toxic to bees and Fish: Smell of mats used in this product is toxic to bees and fish. As a bee keeper, you should consider ditching this product because it might not be good for bees you have. 

This product can only work if you have a small infestation, it won’t work in a severe mosquito infestation.  

Looking for Mosquito net for patio? Read my previous article. It might help you make better buying decisions.

Expectation vs Reality (For Ultrasonic Pest Repeller)

You can’t deal with little animals just by using simple products. Even though they are designed to work perfectly but that isn’t the case always.

These repellents won’t work standalone if you have a larger infestation, you should use these devices with a combination of other products. Don’t treat it as “Play” solution for all your pest problems. It won’t work that way.

Electric repellent might not work for all pests. It works best for rodents, spiders, and mosquitoes ( sometimes) Ask the seller questions before buying the product and see if someone in your neighborhood is using electronic repellent, this might work before spending your hard earned money.

More Pests Activity Than Normal?

Don’t panic if you see bugs popping up from cracks and crevices once you plug the device. This is normal. that’s because these pests are feeling irritated and they’re running around your house trying to find another place to nest and hide.

High activity of pests right after you plug the device is good because it indicates that the product is working and it helps you to identify the area of infestation.

Notice At Which Direction Pest Are Moving

In theory, you don’t have to anything after plugging these devices. But you can get very good control if you use this simple strategy: 

Figure out in which direction pests are moving after you plug the device. Shut off their incoming path by following them when they are moving away. This will help you to repel these pests even if your device isn’t plugged in. 

Rodents spread diseases so if your kid has access to the pathway of mice and rats, you should clean up all floors with floor cleaning liquid to rule out any contamination by rats or mice. 

Clean up the entire area (as certain pests leave some liquid) to help them get back to the place they want. You are burning their bridges to make sure they go away for a long long time.


Way back in 2001 FTC sent notices to about 60 sellers who were selling these devices online asking them to provide any scientific study of its effectiveness. ( which most sellers failed to do and shut their business) 

FTC representative thinks that it was misleading advertising of products that don’t work. This press release got a lot of attention and different scientist started to dig deeper into ultrasonic repellents to figure out if it really works. 

As I quoted different studies above, the results are quite mixed. Generally, different studies suggested that it can work really well against mice and rates, so if you have a rat infestation, this might work really well for you.  

I checked hundreds of products on different online retail sites and people are buying and seem satisfied with the results. If something isn’t working, why these people are buying and posting positive reviews about these devices? This seems to be quite logical. 

The debate between professional pest control professionals, the government and consumers.  

Pest control technicians are always pushing their services to make their industry alive. While the government and EPA is putting bans on products to make sure everything is environment friendly.

On the other hand, the consumer seems helpless. Consumer needs cheap products that work long term, which isn’t the reality and it makes pest control industry very interesting to follow.