Kit4Cat is a revolutionary biodegradable hydrophobic sand that has a natural non-toxic urine repelling coating. It allows veterinariaans, technicians, and cat owners to quickly and easily collect a cats urine sample, without resorting to invasive procedures such as Cystocentesis. Available in a 2lb bag. (3x300g pkgs.) -Non-Invasive -100% Natural -Easy to Use -Cats Love it!