I bought the littermaid Mega self cleaning box for my cats back home. My mom and sisters are going on vacation and my dad totally hates scooping so I cashed out 200 bucks (that I still am paying) so that no cat will be kicked out of the house while mom's away. Unfortunately it is very sensitive, you can't put a lot of litter and most of the time the used litter gets stuck especially if they become too big. It also scared the hell out of Snow that she didn't want to go downstairs anymore. So now they went back to the old fashion scooping and I swore to never buy that product again.