Arm & Hammer Clump & Seal with Micro Guard prevents bacterial odors…7 day odor control guaranteed. This new technology works differently. It seals in immediate odors, plus prevents growth of bacterial odors. A proprietary blend of moisture-activated Micro-Granules forms an odor containing seal around urine and feces. Then a powerful formula with heavy duty odor eliminators plus Arm & Hammer Baking Soda destroys sealed-in odors on contact. New Micro Guard technology guards against future bacterial odor buildup. No crumbly clumps, ultra low dust, seals and destroys odors.