Effortlessly monitor your cat’s health with the color-changing cat litter. The test particles in the cat litter will change color within 3s when exposed to trace blood and the color will remain visible for 7 days, enabling easy detection of occult blood in your cat's urine. The excellent cat litter rapidly forms tight clumps, effectively reducing odor and making scooping a breeze. Protect the respiratory tract of both you and your cats with the 99% dust-free formula. Low-tracking cat litter reduces mess and keeps your floors clean.