This motion activated ultrasonic yard and garden protector makes deer, dogs, cats, raccoons, squirrels and other pests scram! Protect your lawn and garden with this ultrasonic cordless pest repeller! As the pesky deer and rabbits draw near to your garden or a stray animal starts prowling around, the infrared motion sensor on this repeller activates an ultrasonic pulse that's inaudible to humans, but makes animals head for the hills. It's easy to use and requires no harsh chemicals that can harm the environment. Waterproof design mounts in minutes. 30' motion detection range. 4 'AA' batteries not included. 5" x 5" x 3". 2 pack.