ScoopFree Self-Cleaning Litter Box and Anti-Tracking Mat Bundle Self-cleans for weeks with no scooping, cleaning, or refilling Crystal litter absorbs urine with 5x better odor control than other litter Rakes waste into closed waste compartment for superior odor control Disposable litter trays with leak-proof lining for easy cleanup Health counter tracks how many times your cat uses the box Adjustable timer for automatic rake with 3 different timing options. Safety sensors automatically reset rake timer if cat re-enters box Privacy hood gives your cat a secluded bathroom and reduces litter tracking Pairs great with with the ScoopFree Anti-Tracking Litter Mat