My dogs are barkers and I would never even consider this for them. We have had a breakthrough with them by putting them in time out when they bark. We have our xpen by the door and when someone comes to the door and they bark we put thm in there. They have stopped their frenzy barking. We dont put them in if they bark at a cat and if they bark at someone in the window. Only when they barrk at someone at the door. They are dogs and you have to expect a dog to do some barking |