Crystal litter box that’s gotten very little use as my cats did not like the crystal litter. But is the best option if your cat does as crystal litter is far cleaner and less hazardous to breathe in etc. Includes Forever Litter Tray which is reusable so it saves you money on having to buy the PetSafe disposable crystal trays. So you can just buy crystal litter by the bag for much cheaper. The Forever Tray coats $50 on it’s own