The only problem with straw is that it’s not all that absorbent and can actually get a little slimy under wet conditions like I’ve been experiencing for the past week. I wrap my run in heavy duty clear shower curtains to block the wind. The run and the coop stay 10 to 30 degrees warmer than the outside temps. Just make sure there is adequate ventilation. For bedding I use the larger pine shavings from Tractor Supply. Much less dust with those. Straw bales are often used as wind blocks. Dust is a non issue.