Attack wave pest repeller is a user friendly and environmentally safe way to combat rodents. This device uses automatic wave variation, and minimizes the chance that pests become immune to the sound. It attacks the auditory and nervous systems of rodents for maximum pest control. This pressure causes them to abandon their food sources and seek shelter elsewhere. Pest repeller does not harm dogs and cats. Inaudible to pets and humans. Maintenance free. No batteries required. Environmentally friendly. No toxic chemicals. Pestrepeller protects up to 5000 sq. ft.