Bought this as a last resort for my dog who barks constantly at people. It's nice because it has a vibrate mode that warns your dog before shocking him. You can also leave it on vibrate, which I usually do and that seems to be enough most of the time. It also has a rechargeable battery which is nice as replacement batteries for no bark collars can get expensive.Get more detail about Dogtra No Bark Collar Small to Medium YS300.
