I'm brand new to this chicken endeavor, and have had my chicks in their outside coop for about a week. They're 5 weeks old. My question is about the filling the feeder. I am feeding them Chick starter … "start and grow" medicated crumbles. My question is this, do you guys dump the dust when refilling the feeder? It seems like they've picked out the bigger crumbles, and often it's "feed DUST" left at the bottom. Should I just keep adding to the top of the feeder, and let the chicks sort it out? Or should I dump the dusty bottom and start with fresh crumbles when filling the feeder? It seemed like there were several cups of "dust feed" left in the bottom this morning. :cd … and feed isn't cheap? Thoughts?