The Pet Convincer is a safe, humane and effective tool aimed at instant results for curbing excessive barking, jumping, stealing, digging, disobedience and even aggression. * The Pet Convincer was intensively tested and received the seal of approval from leading trainers, veterinarians and pet care professionals for its safety and effectiveness. * The Pet Convincer is based on the Pavlov animal behavior concept that incorporates a unique mixture of acoustic effect and convincing air.