Finally, a lightweight litter that doesn't act lightweight. Arm & Hammer Clump & Seal Lightweight Multi-Cat Litter is guaranteed to control odor for 7 days, is 50% lighter and is 100% dust free. This revolutionary cat litter first seals and then destroys odor on contact with a powerful formula of heavy duty odor eliminators plus Arm & Hammer Baking Soda. Pack of 4