Hi everyone I have a 6 year old jack russell terrier. Yesterday, I received a complaint from our neighbour: apparently, he barks non-stop all day while I am at work. He never barks while I am at home and the neighbour admitted she knows when I am home, because there is no barking. I think the reason he is barking is because the neighbour recently got a cat who wears a collar with a bell. The sound of the bell drives him crazy (sigh, terriers!) but I have taught him to be calm and ignore it. He has evidently since learned that when I am not home, there is nothing to stop him from barking like a maniac. I don't think that asking my neighbour to take the collar off her cat is an option! I've searched and searched for solutions, but most of them seem to require the owner to interrupt the barking with a squirt bottle, a distraction or praise etc. Obviously, this isn't viable because the problem only manifests when I'm not around! I've read about sonic and citronella collars - has anyone had positive results with either of these with a very headstrong dog? Anyone have any other ideas? Thanks so much in advance!