So-Kleen Grey Cat Litter 20kg So-Kleen is ideal for the price conscious consumer, with effective clumping and odour control, it is suited to the higher volume user. The natural mineral has sufficient odour control to clamp down on those unpleasant smells and the litters clumping properties allows the damp patches in the litter to form distinguishing clumps that can be easily removed and dispensed of with no trouble at all. All fines and dust are removed prior to packing to ensure consistent granules. Free from any additives with the ability to minimize bacterial activity and fully bio-degradable. A perfect credit crunching brand for cattery's, breeders and households.