ScareCrow motion-activated sprinkler animal deterrent keeps common animal intruders like cats, dogs, deer, heron, raccoons, and more out of your lawn and garden. The ScareCrow motion sensor sprinkler is a very effective option that does not use chemicals or ugly netting. Using just 2-3 cups of water per burst the ScareCrow motion detector sprinkler animal deterrent startles animals and scares them away. Working for as long as six months on just one, nine-volt battery the ScareCrow motion activated sprinkler protects up to 1,200 sq. ft. day and night. If you need to cover a larger area you can link several scarecrows together.