The Purina Tidy Cats Unscented, Clumping, Natural Cat Litter is a 100% natural clay litter that provides powerful odor control and tight clumping. The activated charcoal traps odor molecules for powerful natural odor control and the litter is naturally free of dyes and fragrances. The litter is available in four 12 lb. bags and is perfect for use in cats rooms or as an alternative to traditional litters.