Naturally Fresh Quick-Clumping Litter is an eco-friendly clumping litter made from all-natural walnut shells. Walnut shells have the unique ability to control ammonia odors, meaning Naturally Fresh neutralizes odors organically without relying on harsh perfumes. Sustainable & Upcycled, Virtually dust Free and low tracking, Proven Superior Ammonia Odor Control, Homegrown in the USA, Clay Free, Corn Free, Grain Free, For Households with One or Two Cats.