The PetSafe® ScoopFree® Sensitive Crystal Litter 2-Pack comes with two pre-portioned bags of PetSafe® crystal cat litter that is completely free of all perfumes and dyes, making it perfect for sensitive cats and people. The crystals absorb moisture on contact to quickly remove odors instead of masking them, and can be used with any litter box or as refills for the PetSafe® ScoopFree® Reusable Litter Tray. When used with the PetSafe ScoopFree® Self-Cleaning Litter Box and Reusable Litter Tray, one bag can last up to 30 days in a single-cat household! PetSafe® ScoopFree® Premium Crystal Non-Clumping Cat Litter, 2-Pack. PetSafe® brand is here to help you and your pet live happy together™.