City Cat Clumping Cat Litter with Activated Carbon 10 Lt. Thanks to the natural activated carbon injected into the product formulation, it blocks the ammonia found in cat urine and feces at the maximum level. ; It also helps to reduce bad odours in the environment, and due to its granule size, the product has the feature of clumping very quickly. It has high liquid absorption ability thanks to the natural minerals it contains. It quickly absorbs and traps the liquid, thus preventing the formation of odor and bacteria.