ARM & HAMMER™ Clump & Seal™ is the biggest advance in cat litter history. No other litter forms a tight seal around odour and destroys it with unique odour eliminators and ARM & HAMMER™ Baking Soda. Extra strength formula also available for Multi-Cat homes. A prioprietary blend of moisture-activated Micro-Granules forms an odour containing seal around urine and feces. This powerful formula with heavy duty odour eliminators, plus ARM & HAMMER™ baking soda, destroys sealed in odours on contact. ARM & HAMMER™ Clump & Seal™ Litter guarantees a 7-day odour free home along with no crumbly clumps, ultra low dust and low tracking. Just remember to remove clumps & solid waste daily to keep the rest of the litter fresh. And, your cat will love the new softer feel!