Purina Tidy Cats Clumping Litter Free And Clean Unscented, Count on Purina Tidy Cats LightWeight Free Clean Unscented With Ammonia Blocker clumping litter to help you win the war against odor while maintaining freshness for your cat. With the same great formula you know and love and the same performance you expect, along with a new look, this low-dust litter pours cleanly and easily into your cats' litter boxes. This unscented formula is free from fragrances and dyes, and the odor control cat litter helps lock in moisture, keeping your cats comfortable. Activated charcoal absorbs odors on contact, while an Ammonia Blocker prevents ammonia odor from forming for 14 days when used as directed, helping you maintain a fresh-smelling and welcoming home.