What are electronic pest control* devices?
Electronic pest control devices (so called pest “repellers”) come in several types. Some claim to repel pest insects, spiders, and rodents by ultrasonic, or very high pitched, sound. Others claim to produce an electromagnetic field that is repellent while newer devices add ionic air cleaning. Typically the small devices are plugged directly into electric wall outlets or through an adapter cord. The claim is that these devices “drive pests out” of a room, or structure, by a combination of electromagnetic, sonic and/or ultrasonic energy. The idea is, presumably, that the high energy waves are repellent to the various pests — everything from cockroaches to mice. *These devices are also called ultrasonic pest control or sonic pest control.
