Small Spaces is a perfect fit for less-than-spacious multiple cat places. Its special power pieces are moisture-activated to neutralize odor on contact, helping to keep even the most crowded kitty corners smelling fresh and clean. And clay granules clump strong for easy maintenance. Power Pieces neutralize odor on contact with moisture. Strong clumps, easy clean-up, controls odor in tight places and 99.6% dust free.