The purpose of the Pet Corrector is to gain the dog’s attention at the instant they are exhibiting an unwanted behavior. When the Pet Corrector emits a hissing sound, the dog is distracted, and the owner can then insert a positive command and reward. Pet Corrector should always be used responsibly, it should never be pointed directly into an animal’s face. It is not recommended for use with young puppies, noise sensitive or nervous dogs. Product includes comprehensive training instructions to ensure correct use.