The dog training door bells provide a fun and easy way for your dog to communicate instead of barking, scratching, or other intrusive methods. High quality and 7 big loud bells, so you can hear the bell clearly and respond to dog’s nature call wherever you are in the house. The belt of the dog training door bells made co.ukom nylon material, tested and proved to be durable, not easy to be damaged. Adjustable design of the belt allows for fit the length to the bottom of the door based on the height of your dog. The door bells can help to train your dogs go out and in, make potty, you will find it is really an effective way.