Removing litter box cleaning from your to-do list. With PetSafe ScoopFree Self Cleaning Cat Box with Lid, you won't have to clean and refill your cat's litter box for weeks.The litter box uses crystal litter that provides five times better odor control than traditional clumping cat litter. The crystal litter also helps keep floors clean because it's 99% dust-free and won't stick to paws.The litter box has built-in safety sensors to ensure that emptying only takes place when the cat is not in the box. There's also a system that counts how many times your cat has walked on the box, so you can easily detect any health problems. The litter box comes with a block that is pre-filled with cat litter. When it's time to change the sand, simply remove the block and insert a new one.Facts about PetSafe ScoopFree Self Cleaning Cat Box with Lid:Self-cleaning litter box.No need to worry about emptying the litter box every day.Comes with a block that is pre-filled with cat litter.Built-in safety sen