Bought the Driveway Patrol and had nothing but problems with it. It constantly went off, no matter how many times I moved it around. Also, when a car drove INTO the driveway sometimes it wouldn't go off!!! Talked to the Telebrands people and after having to pay shipping to send the first one back, they replaced it free. However, it worked just as bad as the first one. NOW they refuse to refund my money!! This product is an absolute ripoff and I wouldn't recommend it to my worst enemy. I agree with the other review that they would give it a minus 10 stars!! I suggest you beware of any other products you might want from Telebrands.