The scarecrow motion sensor sprinkler has been one of our greatest finds for preventing both wild life and domestic pets from being where you don't want them! Simple to install; just hook up your hose, add a (rechargable) 9v battery and this safe and environmentally friendly solution is yours. Our only criticism is that the battery life appears to be much shorter than stated in the product advertising. Small price to pay to continue to enjoying nature while preventing it from enjoying your delicious gardens.