Description Clear Choice Crystals Cat Litter is truly the evolution of cat litter, offering a level of convenience and performance never before available. Millions of micro-pores in each silica crystal granule act like tiny sponges, quickly absorbing and trapping odour-causing particles. Odour control is fast and complete. Indicator Crystals fade in colour after a few exposures to moisture. When all the Indicator Crystals are faded, its time to replace the litter. Reviews (0) Reviews There are no reviews yet. Only logged in customers who have purchased this product may leave a review.