Looking for a lightweight kitty litter with virtually indestructible clumps? ChooseArm & Hammer Platinum Hardball Garden Bloom Lightweight Easy No-Mess Scooping Clumping Cat Litter. This innovative formula works to quickly shrink cat waste and odors into ultra-compact clumps for easy, no-mess scooping. The platinum formula is over 50% lighter than Arm & Hammer’s traditional cat litter (sold separately), yet is highly absorbent to form hard clumps. Plus, the clean Garden Bloom scent offers up to 14 days of odor control and is purr-fect for multiple cat homes.