Cat Litter Silica Gel We are manufacturer of Cat Litter Silica Gel. Our Crystallized cat litters are mixture of white and blue silica gel which has low bulk density less than 500 gm/m3 which can absorb 100% litter of its weight. This gel is absorbent and also provides odor control. The silica gel use in these products is similar to the desiccant that is often found in the pouches packaged as a preservative with foods, medications, and other consumables that can be damaged by excess moisture. Silica-based cat litters provide an option for those who prefer a non-clay litter. They tend to produce less dust than clay litters.