Catsan ultra oudour control Cat Litter, or crystal litter, is the newest kind of litter offering improved urine odour control and the highest moisture absorbency. The granular silica crystals absorb the liquid and the odour for an extended period of time compared to other cat litters. Solid waste must be scooped out.
Care must also be taken to stir the litter on a daily basis. Eventually the silica crystals become saturated and when the litter turns colour the entire pan can be dumped. When stirred regularly, it only needs to be replaced once per month.