Not just a new litter. A new kind of litter. ARM & HAMMER Clump & Seal Cat Litter is specially formulated to provide exceptional odor control. Moisture-activated Micro-Granules form a tight seal around your cat's odors while heavy duty odor eliminators and ARM & HAMMER Baking Soda destroy sealed-in odors. It's the secret to keeping your house fresh for 7 days, guaranteed.