There's a shortage of chicken feed in my area and some one has 6, 50# bags of Ostrich feed for $120. I am considering it since I'm almost out of feed for my laying hens. Will this hurt them??? They do free range a lil bit (2 flocks at separate times) but it's to cut down on flies and grasshoppers that get out if control this time of yr. otherwise my girls get normal Purina layer feed.