Boy that is a problem. Luckily I'm home during the day because Scooter is the king of barkers. The collars I've seen are pretty big but I've read good things about the Citronella collar. Your neighbor must not have any dogs. Our next door neighbor has a Jack Russell and a Pit Bull. The Jack Russell barks A LOT but the Pit hardly makes a peep. The neighbor in back of us put some sort of crazy device in the tree which is supposed to emit a high pitched sound that prevents the Jack Russell from barking. Sure..... All it does is get on the human's nerves and the dog keeps barking. Good luck, I know your baby misses you and that's probably why he's barking. Gosh Yorkies sure love to bark.