I have 17 hens. I have a feeder hanging that I put the feed in. I have been reading other forums about the food waste, but my concern is this. The feed on the ground is mixed with cedar chips and some poo. The newest birds will go around and clean up, but I'm not sure how long I should make them do this before feeding them again. Today I locked out the older 5 hens, the biggest food wasters, and I am letting the younger flock clean up. They are going to town, but I realize there's poop in it and I don't know how realistic it is to make them do this. I clean the coop once a week....I am changing the feeder tonight to a 5 gal bucket w holes drilled in the bottom.