Cats are sensitive animals to smell and their smelling sense is 14 times better than humans. As they are sensitive to smell the use of fragrance can be overpowering their sense of smell. Cat’s Grey Sensitive is specially produced without fragrance for sensitive noses. Sodium Bentonite offers excellent odour properties when it comes to odour binding. Compact granules absorb the urine immediately while trapping the ammonia inside the clump. It is hypoallergenic and does not contain any chemicals or additives. Cat’s Grey is made of premium quality Sodium Bentonite when effectively used with daily scooping there is no need to use scents or masking agents.