The Guardian combines sonic and ultrasonic sounds, predator calls and a thermal motion sensor to detect unwanted pests and drive them out. Use it indoors or outdoors to repel bats, cats, mice, rats, rodents, skunks, squirrels, [country="us,eu,uk,ca"] raccoons,[/country] [country="au"]o[/country]possums, deer, and other animal pests. Let the Guardian do the work for you. No traps, no poisons. Just a pest-free home.