Ammo PESR208X Ultrasonic Delux Plug In Pest Repeller, With Built In Additional AC Outlet & LED Night Light, Effectively Repels Rodents Using High Frequency Sound Waves, Sound Is Inaudible To People & Non-Rodent Pets, Each Unit Is A Plug In, Ideal For the Home or Office, For Use In Kitchens, Living Rooms, Etc. Ammo's plug in pest repeller drives away rodents, insects, Mice, Rats, Ants, Spiders, Cockroaches and other unwelcome critters pests without the use of any chemicals, poisons, traps or insecticides . Instead, it emits sonic waves that common pests find unbearable. These frequencies don't bother cats, dogs, birds, fish, or cat dog bird fish hybrids, nor will they disturb kids. Recommended for average sized rooms, the ultrasonic pest repeller houses a built in LED night light with on / off switch that glows for up to 10,000 hours, making it great for kids rooms and high traffic areas such as hallways and foyers.