I have bought several Havahart sprinklers and after a few months they stop working. I've done everything In the owner's manual, but they just won't work. I contacted the company, but they could care less and they not only won't tell you how to repair them, but they don't sell repair parts. I guess it's just as well because they ignored me when I asked them what the problem could be. They just wanted to sell me more. I had already spent hundreds of dollars with Havahart so I checked out their competition, Scarecrow. Finally I got a product that works without consistently breaking down. I now have several Scarecrows and they all work just fine. I also have several Havahart's dead in my garage. My opinion is, "HAVAHART DOESN'T HAVE-A-HEART.