DoFresh Step Light Weight does NOT clump even though it is called Clumping Cat Litterand it does NOT control odor from cats urine, even though it says Odor Control Guaranteed! The smell of ammonia is overwhelming from Day 1! I had to wear an N95 mask to change my cats litter and add a Cat Litter Deodorizing Product to the new litter. Even that did not get rid of the terrible smell of ammonia! This is a complete misrepresentation of this product! Also, you will not let me send this complaint! User's recommendation: Do NOT buy this product!