The Pet Corrector uses compressed air to interrupt bad behavior, mimicking the sound of a 'hiss' that animals use to scare off predators. Reward your pup immediately once the behavior stops and control the blast to ensure perfect timing. A training guide with do's and don'ts is included, but use the Pet Corrector carefully and kindly so as not to scare your dog. Common uses include barking, jumping, food theft, and aggression. Deter unwanted actions with sound and compressed air control.