Many people use a no bark collars. It is a small collar that gives the pup a small nick from a rechargeable battery in the collar when they bark. It is just enough to teach them that when they bark they feel the nick. They stop barking and after wearing it for a few days, they will bark no more. You can take it off and put a regular collar back on them, and they will no longer bark. You can try it on your arm or neck, it is not painful, it just gives you that little fuzzy tickle you get when you touch a dry cell battery with both fingers. You can get them on the internet and in some pet shops...