We are getting our pullets in two weeks and in preparation to our new girls (our only girls, just three, we are total newbies), we've decided on washed construction sand for the runs and maybe inside the raised coop too. I'd love to ear from anyone who has used this medium for a large or small flock. How's it working? What do you do in the wind? I'm concerned that the dust will harm the chickens. Thanks for any thoughts.