Was using the clumping clay litters that were relatively cheap at first. But didn't like all the dust and messy handling side of it.
Then moved to Breeders Choice Cat Litter which was great and clean. Used to be able to get the 30L bags under $20 on special but nowadays you'll be lucky to get it for $26 (if you buy multiple) which is pretty expensive. I have to see how long it lasts but I think 3-4wks max.
What's everyone using?
Worlds best cat litter off of Amazon. Buy up when it drops to around $22 for 6.35kg using S&S which happens about once every two months going off 3xcamel. Seems expensive but it clumps really well so you don't use much of it. A bag last me about 6 weeks with one cat. Made from corn so it can go in the green bin.
I've used Breeders Choice and TidyCat and Worlds Best is by far better in almost every way. Does get a little dusty after the first week or so after a change but about the same as TidyCat