Company Of Animals Pet Corrector Display 12 count - 30ml. 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 behaviors 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 behaviors are rewarded. 30ml 12count display. This product is labeled ORM-D and therefore can only be shipped via Ground within the continental U.S. and Canada. Because of the safety issues that these ORM-D items pose, they cannot be shipped using air transport.