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 Ultra Scented product. It has a moisture activated scent, so you don't really notice a strong perfume odor in this litter. It also makes very hard clumps that stay in the box, it's very low tracking, it's 99.9% dust free. Thank you.