The ScoopFree Premium Blue Crystal Litter 2-Pack is low tracking & 99% dust-free, which means a whole lot less sweeping up! Just 1 bag can last up to 30 days in a single-cat household - that means less time cleaning the litter box & more snuggle moments with your cat! Crystal litter absorbs urine & dries solid waste to quickly remove odors 5 times faster than clumping clay litter. Includes 2 pre-portioned bags of lightly scented premium crystal litter. This litter can be used with any brand litter box or reusable tray, but we recommend using it to refill the PetSafe Deluxe Crystal Litter Box.