I haven't used clumping litter in the past but I just adopted a new cat from a vet clinic in a nearby town. At this vet clinic my cat became accustomed to a natural herbal clumping litter, and it was recommended that I continue using it. I have found that the ordor control is good, but the litter is very dusty, and I have asthma. I thinking about trying something a little different, and was wondering if the clumping litters made by Tidy Cat and Fresh Step are good choices I don't want to use anything that has too much of a perfume scent in it.