I have a littermaid and I love it. I won't go back to a non-electric self cleaning box. My first one lasted for about 3 years, I replaced it last year. When you have a problem with it, you can call littermaid's toll free # and speak to a rep. They can walk you thru trying to fix the issue, and they give a case # that you can give when you call back. There are 2 resets on it if needed, (as least on my model).