I am so upset that I was not able to find something like this when my dog was a puppy and I was going through hell raising him. This would have been great then, but it is still great now. My blue deamon pitbull is now with my cousin but he is trained to a tee, except she spoils him. Its amazing you tell him to stay out of the kitchen and he won't go in there. You tell him to stop barking and he puts his head down, then does a really short bark. So this is a great ultrasonic trainer or deterrent. You simply say quiet and if they bark again, while barking you hit the button. You repeat this any time they disobey and when you say quiet, they will automatically stop and not say another bark. It does not take more than 3 times to get the point across. Of course you can use it for other learning situations as well. I love this and still upset it was'nt available in like 2013.