Do Ultrasonic Pest Repellers Work on Mice?

Bill Swank
Last updated: February 27, 2024

Ultrasonic pest repellers have mixed results in deterring mice. This article examines their effectiveness and provides insight into how sound frequencies may or may not influence mouse behavior, important for those considering this method for pest control.

  • Ultrasonic pest repellers, devices that emit high-frequency sound waves intolerable to pests, have inconsistent results in their effectiveness against certain pests like mice. While they can initially deter such pests, many scientific studies and user reviews report that pests habituate to the noise and resume their regular activities.
  • The efficacy of ultrasonic pest repellers can be hindered by factors such as the pests’ habituation to the noise, ineffective frequency range, sound attenuation, and generally inconsistent results.
  • Regulatory agencies, like the Federal Trade Commission (FTC) in the United States, have taken action against various companies selling ultrasonic repellers due to false advertising and lack of scientific evidence supporting the devices’ claims.
  • Although ultrasonic repellers are marketed as a safer and easy-to-use solution to pest problems, they have several drawbacks including potentially limited coverage, short-term effectiveness, potential interference with household appliances, and uncertainty over when the product needs replacement.
  • Ultrasonic pest repellers should not be relied upon as the sole method of pest control. For the best results, they should be used as part of a larger pest management strategy, in conjunction with methods like sealing entry points, maintaining cleanliness, reducing clutter, using traps, and consulting with pest control professionals.

Table of Contents

Understanding Ultrasonic Pest Repellers

What are Ultrasonic Pest Repellers and How Are They Marketed?

Ultrasonic pest repellers are devices that emit high-frequency sound waves claimed to be intolerable to pests such as rodents. The key selling point is that these sound waves are imperceptible to humans and pets, making them a seemingly optimal solution for pest issues. Companies marketing these devices often claim they are an easy, safe, and hands-free alternative to other pest control methods. The idea is simple: plug the device into an outlet where there’s evidence of a pest problem, and let the high-frequency sound drive the pests away. In theory, to a mouse, the frequency will sound like a loud, insufferable jackhammer.

What is the Underlying Theory of Ultrasonic Pest Repellents?

Ultrasonic pest repellers are designed to create an uncomfortable environment that discourages pests from entering the area. These devices emit frequencies typically ranging between 20 kilohertz (kHz) and 100 kHz, beyond the hearing range of human ears, which is between 20 hertz (Hz) and 20 kHz. The theory is that these high-frequency sounds confuse and irritate pests, interfering with their communication, breeding, and navigation. The end goal? The bothersome sound encourages them to leave the vicinity.

How Are These Devices Intended to be Used?

These repellents should be installed in key areas where evidence of rodent activity has been noticed – maybe you’ve spotted the pests themselves, or perhaps you’ve noticed tell-tale signs such as droppings or track marks. Once plugged in, the device beams out ultrasonic waves. When a mouse or other pest encounters these waves, they should theoretically sense and hear them, causing enough discomfort to drive them away from the area.

Do Ultrasonic Mouse Repellers Work?

Ultrasonic repellers may seem like a magic bullet solution to pest issues. But, to truly understand if they work, we must dive into the science and studies around their efficacy.

What Does Scientific Research Say About the Effectiveness of Ultrasonic Pest Repellents?

Despite manufacturer claims, the scientific community has had mixed responses to the effectiveness of ultrasonic pest repellents. Some studies suggest these devices may indeed yield positive results, but typically, this has been with devices developed by researchers or pest control professionals, not your average commercial device available for purchase.

University of Arizona 2015 Study

The researchers at the University of Arizona found in their 2015 study that even though patents for ultrasonic pest repellents had increased, commercially available ultrasonic pest devices were not an effective means of treating pest problems. This study brings into question the efficiency of standard consumer ultrasonic devices we might see marketed to the general public.

United States Department of Agriculture and the National Wildlife Research Center Study

Furthering these findings, a comprehensive study conducted by the United States Department of Agriculture and the National Wildlife Research Center concluded that rodents ceased responding to the ultrasonic sounds after only a few days of exposure. This suggests that mice and other pests may become desensitized to the sound produced by ultrasonic devices over time.

Utah State University Survey

Backing this up, Utah State University conducted a survey that suggested rodents might initially be scared off by the high-frequency noise but would usually return to the area and resume their normal activities after a short while. This finding significantly undermines the usefulness of these devices as a long-term solution to pest problems.

University of Nebraska at Lincoln Published Article

Lastly, an article published by the University of Nebraska at Lincoln confirmed the common finding that, despite the extensive promotion of these devices, they often fail to successfully repel rodents from targeted areas.

Are There Any Conditions Under Which Ultrasonic Repellents Are Effective?

Even though many studies suggest their effectiveness is limited, there are a few circumstances where ultrasonic repellents may work. For example, they might deter mice that haven’t established a strong presence or found a consistent food source. However, for rodents that have settled in an area with reliable food and shelter, it seems unlikely that the slight irritation caused by these devices would convince them to leave.

Factors Impacting the Efficacy of Ultrasonic Deterrents

Despite promising theories, the effectiveness of ultrasonic deterrents can be compromised by several factors:


This is a phenomenon wherein pests, after an initial period of discomfort or confusion caused by the high-frequency sound, get used to the noise and start ignoring it. It’s like living near a railway line or a busy street–initially, the noise is bothersome, but over time, you get used to it. Similarly, pests can become accustomed to the ultrasonic noise, rendering it ineffective over time.

Frequency Range

The effectiveness of ultrasonic pest repellers depends largely on the frequency range they emit. If this range doesn’t cover the hearing range of pests, or if the repellers fail to emit the advertised frequencies consistently, the devices’ efficiency would reduce significantly.

Sound Attenuation

Ultrasonic frequencies do not penetrate or travel around objects efficiently, resulting in sizable gaps in the area of coverage. This means sound waves might not reach pests hidden behind furniture, inside cavities, or within walls, rendering the device ineffective.

Inconsistent Results

There is a lack of reliable data showing the long-term effectiveness of these devices. While some users report initial success, the effectiveness seems to wear off over time.

Benefits and Drawbacks of Using Ultrasonic Pest Repellents for Mice

Weighing the pros and cons can help us decide if ultrasonic pest repellers are a viable solution.


  1. Harsh Chemical Free: These devices operate without the use of chemicals, making them a nontoxic and environment-friendly alternative to conventional pest control methods.
  2. Easy to Use: Simply plug the device into any electrical outlet and let it work.
  3. Low Maintenance: Little to no maintenance is needed, making them a convenient option for homeowners.


  1. Limited Coverage: Ultrasonic waves don’t penetrate walls or furniture, which limits their effectiveness in multi-room properties or houses with many obstacles.
  2. Short-Term Solution: Many studies suggest that pests can become accustomed to the noise over time, rendering the device less effective.
  3. Potential Interference: In some cases, ultrasonic pest repellers can interfere with household appliances such as hearing aids, telephone calls, and alarm systems.
  4. Replacement Difficulty: The sound emitted from these devices is inaudible to human ears, making it challenging to know when the product needs to be replaced.
  5. Incorrect Placement: The device may be placed in a location that isn’t a route traveled by pests, limiting its effectiveness. It can be tricky to determine how many repellers you need for your area.
  6. Ineffectiveness Against Established Pests: While these devices might deter pests that haven’t yet established a strong presence, they are less likely to move rodents that have established a consistent food source and safe shelter.
  7. Potential Pet Disturbance: While these devices are advertised as safe for pets, they may bother small animals like guinea pigs and hamsters.

Costs and Types of Ultrasonic Pest Control Devices

The cost of ultrasonic pest control devices can vary greatly depending on a few factors. You could find some as cheap as $10 and some could cost nearly $100.

How Much Do Ultrasonic Pest Control Devices Cost?

The total cost you’ll incur depends on how severe your infestation is and how many devices you’ll need to cover your area effectively. Additionally, the type of pest you wish to repel and the specific features you want in your repellers will affect the price further.

What Different Types of Ultrasonic Repellers are Available?

Since pests can invade both indoor and outdoor spaces, manufacturers have developed both indoor and outdoor ultrasonic repellers. Additionally, there are battery-operated models offering flexibility in placement, and some outdoor models that are solar-powered, providing an eco-friendly power option.

What Features Affect the Price and Efficacy of These Devices?

Key features such as frequency range, coverage area, durability, customization (like volume or frequency control), and power source can all impact the cost. Certainly, a device that allows adjustments to the frequency range to target specific pests and that comes with an extended coverage area will typically cost more.

Regulatory and Consumer Perspectives

Regulatory actions and consumer experiences also shed light on the effectiveness and credibility of ultrasonic pest repellers.

What Actions Have Regulatory Agencies Like the FTC Taken Against Ultrasonic Repeller Companies?

In the United States, the Federal Trade Commission (FTC) has taken action against several companies selling ultrasonic repellers. Specific allegations have centered on false advertising due to a lack of scientific evidence supporting the effectiveness of these devices.

How Do User Experiences and Reviews Reflect on the Efficacy of These Devices?

While some users report an initial reduction in pest activity, many have reported their frustrations about these devices being unable to curb rodent issues in the long run, reflecting the inconsistent results that the studies suggest. Despite high-pitched promises, user reviews tend to align more with the scientific findings: they may work in the short-term, but are far from a permanent solution.

These controversies surrounding ultrasonic pest repellers highlight the importance of thorough research and cautious purchasing decisions when turning to technology for pest control solutions. It can’t be denied that these devices, while possibly an instant and appealing solution, also arrive with a fair share of drawbacks and limitations.

Best Practices for Using Ultrasonic Pest Repellers

If you’re still interested in using ultrasonic pest repellents to combat your pest issues, following a few best practices can ensure the devices work as efficiently as possible:

  1. Avoid obstruction: The device shouldn’t be blocked by furniture or other obstructions to ensure the ultrasonic sound waves reach as far as possible.
  2. Choose the right device: Some devices are specific to certain pests, so ensure you get one designed for your target pest.
  3. Monitor effectiveness: Over time, keep an eye on the effectiveness of the device and adjust the strategy if needed.
  4. Strategic positioning: Place the devices near potential entry points and hotspots.
  5. Invest wisely: Research brands and read customer reviews to choose a reputable brand.
  6. Sanitation: Use ultrasonic devices in combination with good sanitation to reduce potential food sources for pests.

Remember, ultrasonic pest repellers are tools that should be implemented as part of a larger pest management strategy. They are not a silver bullet solution to your pest problems.

Are Ultrasonic Pest Repellers Effective for Mice Infestations?

Are Ultrasonic Pest Repellers Really Effective Against Mice?

Though very promising on paper, ultrasonic pest repellers have shown mixed results in real-world scenarios. While there might be cases where they show some level of short-term effectiveness, they aren’t a robust or consistent long-term solution for mice infestations.

Are Ultrasonic Pest Repellers a Sole, Long-Term Solution for Mice Infestations?

Scientific studies and consumer experiences strongly suggest that ultrasonic pest repellers should not be relied upon as a standalone, long-term solution to pest infestations. They might deter some pests initially, but mice, in particular, seem to acclimate to the sound over time and resume their regular activities.

How Do Traditional Pest Control Methods Compare With Ultrasonic Repellers?

Traditional pest control methods, such as traps and professional pest control services, are generally more reliable and effective in both the short and long term when compared to ultrasonic repellers.

What Are Other Effective and Proven Strategies for Dealing with Mouse Infestations?

Other effective strategies for dealing with mouse infestations include professional extermination services, mouse traps, seal up holes or gaps in your home, and maintaining good sanitation to eliminate potential food sources. A multi-pronged approach typically works best for dealing with persistent pest issues.

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