What do you do about the scattered food in the run that grows fuzzy mold after a rain? I have been trying to scrape it up with the hoe, but there is grass in there and I can't get it all. Is this dangerous to my chicks? They are almost five weeks old and are in an outdoor run during the day and inside at night until I get the coop and permanent run finished. I put their feeder out with them and food gets scattered onto the ground and then molds.