Pettex Premium Grey Cat Litter benefits from a unique sieving system that boosts the already excellent clumping powers. The Pettex original formula helps create a more economical dust free cat litter, while the natural minerals have sufficient odour control to clamp down on those unpleasant smells. As if that wasn’t enough, the unique super clumping properties helps the damp patches in the litter to form distinguishing clumps that can be removed and dispensed with ease