PLUG IN Pest Free®
Electromagnetic Technology
vs
Ultrasonic Pest Repellers

Not all electronic pest control technologies are created equal. Discover why PLUG IN Pest Free has been trusted by millions worldwide for more than 30 years.

Unlike ultrasonic pest repellers, which depend on high-frequency sound waves, PLUG IN Pest Free is engineered to work through the electrical wiring network of a building. Ultrasonic sound waves are restricted by line-of-sight transmission and can be blocked by walls, furniture, cabinetry, insulation, stored goods, and other physical barriers. Consequently, ultrasonic devices generally provide protection only within the immediate area where they are installed and often require multiple units in an attempt to achieve wider coverage.

Although ultrasonic products are often promoted as an inexpensive pest control solution, many consumers report inconsistent performance and find themselves purchasing multiple devices to improve coverage. PLUG IN Pest Free takes a fundamentally different approach by operating through a building’s existing electrical wiring system rather than relying on sound waves.

PLUG IN Pest Free is designed for use around most common household pets, including cats, dogs, birds, and fish. However, pet rats, mice, hamsters, gerbils, and other closely related rodents should always be housed away from electrical wiring while the system is operating.

PLUG IN Pest Free is also designed to operate safely alongside common household appliances and electronic equipment, including televisions, radios, computers, gaming consoles, kitchen appliances, Wi-Fi equipment, alarm systems, and medical devices such as pacemakers.

Consumers should also exercise caution when considering gimmick combination devices promoted as both ultrasonic and electromagnetic pest control solutions. Many of these products combine ultrasonic speakers, LED nightlights, USB charging ports, and broad electromagnetic claims into a single unit that appears impressive on the packaging.

While these devices may promote numerous features, our testing and industry observations indicate that many rely primarily on ultrasonic technology while providing little or no evidence of meaningful electromagnetic performance throughout a building’s electrical wiring system. More features do not necessarily deliver in better pest control performance.

Consumers should also distinguish between scientific testing conducted on a specific product and marketing claims supported only by studies involving different products or technologies. Scientific research performed on one technology should never be assumed to validate another product that may use different designs, operating principles, or combinations of technologies.

Since 1998, PLUG IN Pest Free has been supported by blinded scientific testing conducted by the University of New England (UNE), NSW, Australia, on its own patented electromagnetic technology. Unlike the general scientific references commonly used throughout the industry, the University evaluation was conducted specifically on PLUG IN Pest Free technology. Developed in Australia and trusted worldwide for more than 30 years, PLUG IN Pest Free continues to set the recognised benchmark in electromagnetic pest control technology.

PLUG IN Pest Free® Electromagnetic Technology

Patented. University-Tested. Trusted Worldwide for More Than 30 Years.

Numerous products available today claim to utilise electromagnetic technology. However, testing of many competing devices has demonstrated limited or no measurable effectiveness, while many manufacturers provide little or no product-specific scientific validation to support their claims.

PLUG IN Pest Free utilises patented electromagnetic technology that operates through a building’s existing electrical wiring system. By generating carefully controlled electromagnetic pulses throughout the wiring network, Pest Free helps create an environment that rodents and pests find less attractive.

Unlike many competing products, PLUG IN Pest Free is supported by blinded scientific testing conducted by the University of New England (UNE), NSW, Australia, on its own patented technology. Since 1998, this independent scientific evaluation has helped establish PLUG IN Pest Free as the recognised benchmark in electromagnetic pest control technology.

✓ Utilises a building’s existing electrical wiring system to help provide protection throughout the structure.
✓ Helps target areas where rodents, cockroaches, and other pests commonly nest, breed, and seek shelter.
✓ Helps reach areas that are often difficult to treat using conventional pesticides, including wall cavities, cupboards, drawers, roof spaces, and other concealed areas.
✓ Available in models designed to suit a wide range of residential and commercial property sizes.
✓ Completely pesticide-free, with no ongoing need for toxic pesticides, hazardous poisons, traps, or baits.
✓ Designed for use around most common household pets, including cats, dogs, birds, and fish.
✓ Designed to operate safely alongside televisions, computers, gaming consoles, Wi-Fi equipment, alarm systems, kitchen appliances, and medical devices such as pacemakers.
✓ Supported by analytical testing, blinded university scientific testing, and more than 30 years of documented real-world performance worldwide.

Ultrasonic Pest Repellers

Limited by Line-of-Sight Coverage and Physical Obstructions

Ultrasonic pest repellers operate by emitting high-frequency sound waves into the surrounding area. Unlike electromagnetic technology, ultrasonic sound waves do not travel through a building’s electrical wiring system and are generally limited to the room where the device is installed.

Walls, cupboards, drawers, wardrobes, furniture, appliances, stored items, and other physical barriers can interfere with ultrasonic sound waves, creating areas where rodents and pests may continue to nest, breed, and seek shelter without being directly exposed to the device.

For this reason, many ultrasonic manufacturers recommend installing multiple devices throughout a property, often requiring separate units for individual rooms together with additional devices in roof spaces, basements, garages, and other locations where pest activity may occur.

For example, an ultrasonic device operating in one room may have little or no effect on a mouse nesting behind a closed cupboard, inside a wall cavity, beneath a refrigerator, or in another concealed location beyond the device’s direct line of sight.

Although ultrasonic products continue to be marketed as a convenient pest management solution, consumers should understand their inherent coverage limitations and the practical challenges of relying solely on sound-wave technology to help protect an entire building.

Common Ultrasonic Marketing Claims

Broad Coverage Claims Without Product-Specific Scientific Validation

Many ultrasonic pest repeller manufacturers promote a single device as being capable of protecting thousands of square feet within a home or business. In reality, these claims are often based on ideal open-space conditions and may not accurately reflect real-world properties containing walls, closed doors, furniture, cabinetry, appliances, insulation, stored items, and other everyday obstructions.

Many ultrasonic products also claim to repel a broad range of rodents and insects while providing little or no product-specific scientific evidence demonstrating that the actual device being sold has undergone formal efficacy testing.

By comparison, PLUG IN Pest Free is supported by blinded scientific testing conducted by the University of New England (UNE), NSW, Australia, on its own patented electromagnetic technology and has been trusted by customers worldwide for more than 30 years.

CONCLUSION

PLUG IN Pest Free® utilises patented electromagnetic technology designed to operate through a building’s existing electrical wiring system, helping create an environment that rodents and pests find less attractive throughout the structure.

Supported by blinded scientific testing conducted by the University of New England (UNE), NSW, Australia, on its own patented technology and trusted by customers worldwide for more than 30 years, PLUG IN Pest Free has become the recognised benchmark in electromagnetic pest control technology.

By comparison, ultrasonic pest repellers rely on line-of-sight sound waves that can be limited by walls, cupboards, furniture, appliances, and other physical obstructions. As a result, rodents and pests may continue to nest, breed, and seek shelter in concealed areas beyond the effective reach of the device.

When comparing electromagnetic technology with ultrasonic pest repellers, consumers should look beyond marketing claims and consider product-specific scientific validation, real-world performance, and more than 30 years of documented customer trust.