This thing works wonders. Let’s start off by saying it was such an easy set up and extremely quick! I have two cats. One will use it and one won’t. After each use I can’t even tell it’s been cleaned because it’s so quiet. The only way I know my cat used it is by checking the box itself of the app. No Odor what so ever! It’s such a time saver. As a person who had to clean the box multiple times a day this is a life saver!