It absorbs the urine thoroughly for a week, so there is no need to replace it for about a week. Since it is a sheet type, it is easy to replace without dirtying your hands. For 1 cat (up to 17.6 lbs (8 kg). Remove poop quickly Contains an antibacterial agent, so it prevents the growth of ammonia odors (odors). Formulated with deodorizing microcapsules specifically for cats and a powerful deodorizing silver ion formula. Inhibits 99.9% of odor bacteria (*Antimicrobial test results from a third party agency for deodorizing and antibacterial sheets. It does not inhibit all bacteria. The surface of the sheet is white, so it is easy to see the color of the oisko and check it.