This clumping litter is made entirely of natural clay.ÿWith its patented Smart Odor Shield technology, OdorLock blocks ammonia release, uniquely neutralizing urine and feces odors for 40 days.ÿIts excellent absorption rate and its fast and powerful agglomeration facilitate cleaning.ÿOdorLock generates less waste than competing clay litters: you'll use 45% less litter per year. * Plus, it's 99.9% dust-free, leaving no trace on floors or furniture and keeping your cat's airway clean. and your family.ÿShe is soft and comfortable for your cat.