PETKIT Occult Blood Test Mixed Cat Litter contains 1% occult blood test particles, which can detect trace blood in cat’s urine, making it easier to monitor their health. It will have a color change within just 3 seconds if blood is present, and the results remain accurate for up to 7 days. Additionally, it’s 99.9% dust-free, helping keep home clean. The litter’s strong water absorption ensures quick clumping, while bentonite effectively controls odors and simplifies scooping. It also dissolves quickly in water for easy disposal. Plus, the soft texture is gentle on cat’s paws, and the design reduces tracking. Made from a natural blend of tofu and bentonite, the cat litter provides an effective and eco-friendly litter solution.