I've not had to address the dust issue yet, but can tell it's getting to be an issue in the coop. When it was warm weather, I just had the windows open, so no big deal. But, since it's been cold and the coop closed up, I've started getting a dust build up. My plan is to do a MAJOR cleaning on the first 60+ degree day. Get out all the shavings/hay, and spray it all down with the pressure washer.