Garden Creations JB5028 Ultrasonic Cordless Pest Repeller 30' x 130 degree effective range with automatic motion sensor (roughly 5000 sq. ft.) Motion-activated ultrasonic tone adjustable for specific pests (insects, cats, dogs, deer, skunks, rodents, bats, etc.) For indoor or outdoor use,Compact, lightweight, cordless, & non-intrusive Senses movement from 15' away,Non-lethal, non-chemical humane device