The bell has worked well for us. We started by ringing the bell everytime we let Maggie out. Then we took her paw and touched the bell so it would ring. It took a couple of weeks of really working on it before she learned it. Then for a while she rang the bell so often I wanted to throw it away but it is a good system for us. One of my cats has started ringing the bell so I will be asleep at night and hear the bell ringing. Not my favorite sound at 3am.