Based on recommendations on The Cat Site, I decided to try Dr. Elsey's Litter. I get the one in the BLUE bag (40 pound bag). It is VERY low dust, almost none. And hard clumps. I've had it about a week, in 3 of the 11 boxes, and like it. After 18 years of Tidy Cat and dust all over the house, I think I am going to change brands! PetCo carries it. Amazon does too.
There is a rebate form for one free bag, here: http://www.preciouscat.com/ /Free_Li...orm_fill_8-17