Lot of 3- Product Features: You can’t hear a sound. It’s totally silent and odor-free. There are no harmful pollutants, Rodents and Insects survive because they've evolved different sensory mechanisms than humans particularly sensitivity to sound waves This compact electronic device uses sonic waves to repel mice, rats, fleas, crickets, spiders, silverfish, and even those pesky moths!Plugs into any standard wall outlet w/Night Light & Extra Outlet. 750 Foot Range For use against mice, rats, spiders, roaches and ants. Plugs into any standard 110V wall outlet.