<p>Safe and Eco-Friendly: The ultrasonic pest repeller will not hurt any animal, plant and human being. There are no messy chemicals or pesticides, no traps, no dead animals. The Solar Ultrasonic Animal Repeller gets rid of all animals by emitting a mixture of ultrasonic sounds and powerful flashing LED strobe lights, scaring intruding animals and pests out of the area. coverage - Motion sensor covers an arc of 110 degrees left and right, motion sensor distance is up to 19.68ft (8m), working area is up to 400ft squares. -- Once the pet stays close to the front of the device, the PIR sensor starts workingUpgraded Ultrasonic Version - Irregular and variable frequency makes it more effective for chase away the most aggressive animals with Passive Infrared (PIR) motion detection technology.Auto-adjust frequency range - The detects motion and triggers the speaker at ultrasonic tone emitting that drives away outdoor animals like mice, rats, skunks, dogs, cats, foxes, birds, bats and more. Waterproof: IPX4, it can be installed in your home, garden, yard or anywhere else. Weatherproof with waterproof waterproof cover.</p>