I've enjoyed using this PetSafe scoop free self-cleaning litter box. I've always scooped litter boxes so being free of this chore is a relief. You do have to use specific type of litter, crystal, it scoops after your cat leaves the box within 20 minutes, and it will turn off if the cat enters. I have four cats so having another option in the litter box area is super helpful. The cats are adjusting to it and I may buy  more for them!