We love this litter box! It was very easy to set up. No more scooping is nice. The automatic rake cleans the box 20 minutes after the cat leaves the box. It has a sensor that senses if your cat gets back in the box and will stop raking and wait 20 minutes before resuming. It rakes the solid waste through the door into the bottom litter tray and then closes the door. Disposing of the litter tray is very simple, you throw it and install a new litter tray. The tray lasted us over a week. This box is really  nice and convenient.