I love this scoop free litter box. My cats took a few days to get used to it and the automatic scooper. They would get scared of it Everytime it moved but after a few days they got used to it and now use it all day. The only thing that I don't like is that the bottom of the litter box is a type of card board and it has to be replaced every month and the litter has to be replaced every other week because the urine doesn't clump up. It only scoops number 2. But other than that it is very efficient.