PetSafe ScoopFree Smart Self-Cleaning Litter Box is a self scooping hands free system. So no matter if I am at work or at home the box gets cleaned. I do like that it has disposable litter trays with crystals, our family has used these types of crystals with our cats on and off a few times already and they are very good for odor control. The pictures in the instructions were super easy to read and understand. Very quick and easy set up! To our surprise the motor while running and cleaning the box is no louder than a cat walking in the box.