My neighbors have two German Shepherds that they let out at 5:00 every morning. They would bark nonstop for five to ten minutes waking my wife and me up. After asking my neighbors several times to please not let their dogs bark so early in the morning and nothing being done about it, I decided to take a chance and buy a dog silencer. I mounted the silencer to the top my shed and pointed it into my neighbors yard. The next morning I heard a couple of barks then silence. After a week I would only hear one, maybe two barks and after two weeks, I don’t hear them at all. I haven’t been woken up by those dogs in over a week. The dog silencer Max works. My only regret was not getting it sooner.