Occult Blood Test Mixed Cat Litter - 4 BagsPETKIT 2024 new mixed cat litter, which changes colors to help monitor your cats urine to detect potential illness for your cats early. The test particles will change color in 3 seconds when exposing to colorless trace blood in cat's urine, and maintain the color for 7 days, which can remind you of your cat's health. Rapid Clumping: Small particle bentonite not only fills up the gap of tofu cat litter, but also increases the connection area, enhances