I have a neighbor two doors down that has a doggie door that allows their dog to enter their fenced back yard. The couple went through a divorce and the wife got the house. Since that happened, she lets the dog have access to the doggie door in the middle of the night. This means that the dog almost nightly for over a year is in the back yard barking non stop from 2am to 4am. I know other neighbors have complained and she promised to close the doggie door at night. That only lasted a couple of weeks. Recently, I have noticed a change. When the dog started barking, a horn would sound almost immediately. I'm assuming another neighbor must have gotten a noise device. The horn seems to stop the barking almost immediately. Now the dog doesn't come out at night or it is not barking at night.
