Drives pests away with sounds they cant stand — in an area up to 3500 square feet! Repel pest animals with &Quot;psychoacoustic jamming,&Quot; intense, variable pitch ultrasonic and sonic sound waves that create a noisy, hostile dynamic sound environment. The noise is intolerable to pests yet friendly to pets and humans. Works against rodents, insects, bats, spiders, skunks, squirrels, rats, raccoons, fleas, ticks and other flying or crawling insects Use indoors or out, in food establishments, farms, garages, basements, attics and crawl spaces, barns, roof eaves and awnings, warehouses, commercial facilities, homes, offices, porches, pool areas, campsites and more Improved two-speaker design increases bouncing of sounds AC and DC operation Weather-resistant metal housing.