Our neighborhood (two doors down) had an all day and sometimes all night long barking dog problem. The family refused to do anything about it. One day the dog stopped barking, with only an occasional yelp. We couldn't understand why, but were grateful. Turns out the neighbor on the other side of them got fed up and purchased an anti bark device that looked like a bird house and emitted some kind of annoying sound that hurt the dogs ears every time it barked. It worked until the family moved away. I had a similar problem with a dog that lived next door to my elderly MIL. Owner was actually belligerent when asked politely to control the barking, so we got the bird house and set it up....worked like a charm on the dog, but had no effect on the terrible neighbor.