The Pet Corrector is a dog training aid that interrupts unwanted behaviours instantly with harmless hiss sound. It can used for behaviours such as excessive barking, jumping up, stealing and sitting on the furniture. The Pet Corrector sound gets the dog’ s attention so the owner can re-train the dog to do a positive behaviour instead. It is used and recommended by trainers and behaviourists throughout the world and comes with a full training guide. The Pet Corrector comes in 3 sizes: 30ml, 50ml, 200ml and has a convenient holster for the 50ml size. This product is not suitable for puppies, anxious or noise sensitive dogs. Do not place aerosol in clothing pockets.