The Purina Tidy Cats Clumping Cat Litter is perfect for keeping your cat litter clean and fresh. The litter features a one-pound capacity and is made of a durable plastic that is recyclable. The litter also has a powerful ammonia-blocking agent that prevents odor for up to two weeks. The Tidy Max moisture activated power pieces absorb odor and liquids quickly, and the Tidy Lock protection locks away strong urine and fecal smells.