I use Fitch for my 2 - I don't think I'd ever go back to Carefresh or Megazorb again! I've not had a problem with dust, it has a nice smell to it - kind of airy but the 2 bags I've had have t been very dusty at all. It makes a nice substrate and looks really nice in the cage, the hamsters much rather prefer burrowing in Fitch as opposed to Carefresh! Hope this helps!
DM with any further questions..