Our choice has always been Feline Pine - the bag, not the scoopable in the box.......ran it by the vet first, used it for years and never had a problem. It is a very clean smelling litter and breaks down when wet....it's not overly dusty, altho at the very bottom of the bag there will be some.....we have had elders, kids with upper respiratory, insulinoma, lymphoma.....and they have all been just fine with it. Our kids love it and have been known to roll around in the litter pan when it's changed. I'm sure you will get a lot of options and it's really a matter of personal preference but Feline Pine is our litter of choice. Kathy [Posted in FML 7522]