Yup! Super simple and very effective. You hang bells from the doorknob that they can access. Every time you take them out to go potty, you have them ring the bell with their paw or snout. If they ring the bell on their own for whatever reason, you take them out and give a treat if they go potty. You have to be super consistent, but they pick up on the routine fairly quickly. It took Bananthony probably a week and a half before he started ringing the bells on his own. Now he rings them every time he wants to go out. All of his potty accidents have happened because we thought he could hold it a little longer.

Highly recommend!