I love it and Deer hate it! One night I actually saw how it works when a deer approached my open garden (and we live in the country). As the sensor detected the deer it fired (sprayed) and the deer leaped straight up in the air and ran for its life. It was so funny I could not get the laughing smile off my face! Sense then (2 years now) deer come close to the garden almost daily but they do not enter the garden area. I tell all who are interested that this is they ..