The PetSafe Gentle Spray Anti-Bark Bark Dog Collar Model SNS-BK-C is a highly effective training tool that is designed to help you control your dog's barking behavior. This collar uses a spray mechanism to release a gentle mist of citronella that is both safe and effective, helping to deter your dog from barking excessively. This collar is suitable for dogs weighing 6lbs or more, and features a rechargeable battery for convenience. It is also designed to be safe for both humans and pets, making it a great choice for any dog owner looking for a humane and effective way to train their furry friend.