Self-cleans for Up to 30 Days: No scooping, cleaning or refilling your cat's litter box for weeks Unbeatable Odor Control: Patented Crystal Litter Trays provide 5X better odor control than traditional clay litter, removing smells by absorbing urine and dehydrating solid waste Privacy Hood: Give your cat a private bathroom while reducing litter tracking and odor Health Counter: Digital display tracks your cat’s visits to the box to help you identify possible health issues Fresher Than Ever: A light on the box alerts you precisely when to replace the litter tray Now Even Easier to Clean: Easy disassembly, removable rake and smooth interior finish make maintenance simple, keeping the box tidy with minimal effort Disposable Litter Tray: Includes one patented crystal litter tray and a pre-portioned bag of premium crystal litter For Use with Crystal Litter Trays: Only compatible with official PetSafe ScoopFree Disposable Crystal Litter Trays or Reusable Litter Trays