asily train your dog to ring the bells when he needs to go outsideInstead of hearing BARKING & SCRATCHING & Whining. All dogs have to go potty, our doggie doorbell proven as an effective method for housebreaking, housetraining, potty training for your puppies, you can teach them how to signal you when they have to goAdjustable door bell length for small, medium and large DogsExtra Loud Strong Bells! Don't worry you couldn't hear the bells when they rang them. Our bells are loud and can be heard throughout your homeHang Bells from Any Doorknob or Handle; Our premium quality doggies doorbell comes with a snap that makes it easy to use on any type of door handle; Small dogs, medium dogs, big dogs and large dogs all love our dog bell