The So Phresh MultiCat Ultra Clumping Grass Seed Litter has powerful clumping capabilities that immediately combat odor in the air so your home stays fresh. What makes this litter so special just isn't the fact that it is made with 100% US sourced, grass seed. The superabsorbent and strong clumping properties, combined with it being an earthconscious alternative to clay, is a rare formula to find in a litter, especially one made without chemicals. Light in weight but strong in performance, our litter will exceed your expectations at trapping odor and keeping the waste contained in one tight, noncrumbling ball that won't stick to the sides of the litter box or break. So at the end of the day, you can breathe with some ease knowing you are scooping sustainably without sacrificing on performance.