With the Advance Dog Potty Training Bells， you can train your furbaby to let you know when he needs to go outside. Thanks to the bells， your pup doesn’t need to scratch， whine or bark to send you a clear signal. Two snaps allow you to choose the paw-fect length to accommodate most doors and sizes of dogs. These bells are fashionable and functional. Just jingle the bells when you take your furbaby out， then reward him when he starts to use the bells himself so you always know when he has to go!