The Pet Corrector Stops: Barking, Chasing, Stealing, Jumping Up and Place Avoidance. It works by emitting a hiss of compressed gas to interrupt a dog\'s unwanted behaviour. It is used and recommended by trainers and behaviourists throughout the world. The inert gas has no smell, and is totally safe and works on most animals including cats, horses and moreEffective: Interrupts unwanted behaviour instantly and redirects the dog’s attention allowing for positive reinforcementSafe: Contains a safe, compressed gas which is non-flammable and odourlessNatural: Emits a short hiss, mimicking nature’s warning soundRecommended: Recommended by trainers and animal behaviourists worldwide