Scented clumping litter made up of ultra-absorbent clay grains (absorption levels 280 -330%). In contact with liquids, it immediately forms very compact blocks, leaving no room for the development of bad odors. that you can easily remove every day, leaving a completely clean and dry litter box. --- clumping litter will last you much longer (several weeks) and you only have to put some back in the box when you remove the clumps. In addition, a high-end clumping litter (such as City or Extreme Classic) is less dusty; it is therefore ideal if you or your cat are sensitive to dust.