Description from the vendor website:

Seals and destroys odor.

       • Experience the confidence of a 7-day odor-free home – guaranteed
       • Patented Clump & Seal™ technology seals and destroys odors before they can leave the litter box
       • 99.9% dust free
       • Rock-solid clumps for easy scooping
       • So effective, millions have switched
       • Designed to control odors in homes with more than one cat