Precious Cat Classic, Ultra & Ultra Moisture Release Scented uses a proprietary particle size combined with 100% all natural premium, hard clumping, clay that has a texture we call good paw feel. This all natural litter from the earth and does not have any perfume, deodorants or chemicals added. A cat’s sense of smell is 1000 times greater than their owners. 99.9% Dust Free. Hypo-allergenic, contains no plant proteins. All Natural. Hard clumping, Unique Multi-cat Formula. Ideal for sifting/mechanical litter boxes. Superior odor control.