Snakes, insects and birds such as geese, use their hiss sound to drive off predators and our domesticated pets have an instinctive sensitivity to this sound. The Pet Corrector emits a hiss of air which mimics this sound, to interrupt undesirable behaviours in dogs such as jumping up or stealing. There is a detailed training guide included, with helpful training tips and key dos and don'ts. It is important that the Pet Corrector is used responsibly and that alternative desirable behaviours are rewarded.