... properties than the past cat litter su crystal cat litter also called silica gel cat litter Opal and irregular unrollable ... and lasts for long time; one 1.8kg bag cat litter can last as long as one month without ... much more cat litter in the box, the proposed way to use one 1.8kg bag is following: one ... 2-7mm,2-8mm. [Packing] 1.8kg bag ,3.6kg bag, 15kg bag,500kg bag. [Remark] Packing and size can be ...