Arm & Hammer Odor Alert Cat Litter is the only litter with pre-odor indicators that turn blue on contact with urine. This enables you to see and remove the source of odor before it starts to smell.Now contains more Arm & Hammer Baking Soda to eliminate even more odorsClumps hard and fast to lock in odors on contact- with virtually no crumblingSafe color-change won't transfer to cat's paws or on carpetsPackages in a storage carton with an easy-pour no-spill spoutA portion of the proceeds from the sale of this item will benefit the Foundation. Together we will make a difference!