This litter box uses crystal litter instead the traditional clay litter which gives freshness for weeks! No need to scoop or clean the litter box as the litter box does it all automatically. The crystal litter absorbs urine smell and dehydrates feces with no dust like traditional litters . A great feature is the saftey sensor that only allows the litter box to clean after your cat has left the box. The litter trays are lined so there's no accidental leaking on the floor. This is my best pet buy to date!