Be sure to watch the "Leash Ninja" video in the phase 1 training videos to learn how to do the "leash pumps". This will replace the "onion chops" which replaced what you see Hunkie doing in the video below. I was formally taught how to use the prong collar like Hunkie is doing. Once you start training in a more gentle way you will see that "less is more" and you will get less side effects and enjoy the bonding experience of training much more with your dog or a clients dog.