Pet Corrector is a training aid that helps stop barking or unwanted behaviors. The Pet Corrector makes a loud hissing noise to distract your dog and therefore stop unwanted behaviors. 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. Includes a training guide and helpful tips. Compressed air contains HFC134a.
The Pet Corrector™ emits a hiss of compressed gas which produces a broad spectrum sound (white noise) varying from a low-frequency rumble to a high-frequency hiss to interrupt a dog’s unwanted behaviour. 

The overall effect is to grab the attention of a dog.  Dogs exhibit a wide range of reactions according to their hearing sensitivity and prior conditioning. Nevertheless, almost all dogs initially react to the Pet Corrector because the sound is genetically programmed to be associated with danger, such as from the hiss of a snake, an angry swan or the buzz of a dangerous insect.