Catit Design SmartSift is an automatic cat litter box, sifting system that takes the chore out of litter maintenance. Simple yet innovative, SmartSift's litter sifting design does the scooping for you, so you can say goodbye to your cat litter scooper. To refresh the self-cleaning cat litter box, all you have to do is pull the lever; it's that simple! The lever activates an automated and noiseless pull-and-refresh process that quickly and efficiently refreshes the litter pan, while collecting waste in a bag. Clean litter is recycled back into the pan and waste clumps are deposited in a collection bin with cat litter liners for easy disposal. Replenishing the litter is also easy, simply open the maintenance access door on the cat litter box with lid and add as needed. SmartSift is a large cat litter box with a safe manual system, with no motorized pieces that can heat up or fail over time and no expensive electronic parts to replace. This feature is quiet and safe, making it very kitty friendly. SmartSift's sealed design prevents tracking and controls dust, which helps keep your home cat litter dust free. Additionally, it comes with an integrated cat litter deodorizer carbon filter to absorb odors inside the pan. Features include: Safe and quiet process, a sealed cat litter enclosure design that minimizes tracking and provides privacy, integrated carbon filter cat litter pad that absorbs odors, a large swinging door that allows cats to enter and exit easily, clear-view access window that allows easy monitoring of litter, pullout waste bin collects waste clumps for easy disposal in cat litter bags, a maintenance access door that allows you to easily replenish litter, and includes one liner for the cat pan as well as one for the pullout waste bin. To complete your cat supplies with some of the Catit products, check out the Catit Cat Litter Mats, Catit Cat Litter Scoops, and lines of cat toys.