We had a woodpecker put a hole and lots of scratches on our outdoor shed. We filled the holes, painted and attached an attack spider to each side of the shed. So far we have not had any more holes or scratches so I would say that the Attack Spiders worked great. It does seem to need a change of batteries frequently but it does not get a lot of protection from the elements so I can understand why. An added bonus is that it is a great conversation piece. I have told everyone about them that I know just in case they ever have the need for one or two. An ingenious idea—thanks!!!