You can train your dog to ring this doorbell when they need to go out.

Might Paw Smart Bell

Ding Dong! Forget the scratching, barking, and whining! Easily teach your dog to ring the Mighty Paw Smart Bell to communicate potty time. It's the premier solution to all of your dog potty training problems. As a bonus all of your friends and family will be AMAZED at your dog!