How do Electronic Rodent Repellents Work? Electronic mouse repellents operate under the idea of using high-frequency sounds to drive mice away from food sources and nesting grounds within human homes. Sonic or ultrasonic devices have been touted as repellents for everything from roaches to insects to rodents, specifically rats and mice.

Unfortunately, when it comes to ridding a home of mice, plug-in pest repellents rarely deliver the desired results. Plug-in pest repellents emit continuous high-frequency sounds designed to irritate and dissuade insects and rodents

An ultrasonic pest repeller is an electronic device that emits a high-pitched sound. Humans are unable to hear the high-pitched sound, but household pests can hear the noise and are either killed, repelled, or incapacitated by it.

Pest repelling plug-ins use electromagnetic fields and emit ultrasound to banish bugs. Asked by: Geoff Stevenson. The evidence suggests not. There are two main kinds of device: those that emit ultrasound and those that produce a pulsing electromagnetic field.

How Does an Electronic Mouse Repellent Work? An electronic mouse repellent works by emitting a high-pitched noise that only rodents can hear. This noise is incredibly annoying and will cause mice to flee the area where it’s being used.