100% sustainable, Sustainably Yours Clumping Multi-Cat PLUS goes through an extra processing step beyond their basic Multi-Cat litter. Then they more cassava for improved clumping and odor control – a must for litter boxes that are frequently used. This litter stops odors on contact, clumps firmer and faster, is flushable* with very low dust, and it's chemical- and frangrance-free. Maximum odor control while minimizing dust and tracking. Ideal for homes with two or more cats. Made from a special blend of corn and cassava, two natural, renewable and biodegradable crops!