Petiner Electronic No Bark Control Dog Training Collar with Adjustable Sensitivity Control

This is a great help to me, It helps me control my dog from barking non-stop. I was not sure it would work, she barks at every little thing. But it does, I was amazed when she stopped barking. I would recommend it to anyone as a good alternative to shouting at your dog all day. (which I do every day) It makes for a more serene day! It was well packaged and shipped in a timely manner.