Hello, I'm Dr. Bruce Elsey. I started the All Cat Clinic in Englewood, Colorado in 1978 and Precious Cat products in 1989. 

This is our Precious Cat Ultra product. It makes very hard clumps in the litter box that don't break down. It has superior odor control. It's 99.9% dust-free. It has very low tracking capabilities. It works ideal in multi-cat households. It works very well in controlling the odor from both urine and feces. It does not have any plant proteins, deodorants, or perfumes, so it's hypoallergenic. Thank you.