I've tried many different litters. I used to use TidyCat, but with Sash's constant sneezing it was too dusty, I then tried Swheat Scoop, also too dusty even though it claims to not be. World's Best I found I didn't get my money's worth since they say to only change it once a month although I felt the need to within two weeks. I've now been using Yesterday's News (unscented, softer texture) for a long time now, it's definitly the least dusty. I change the entire box once a week, I'm very fussy about my boy's box.