I am at my wits end. I cannot keep fire ants out of the feed and coop. They are only in there because of the feed. I used insecticide around the coop/run and it has kept down the number of fire ants, but they are still in the feed. I added DE to the coop/area and into feed, but did not do a thing. So I threw talc powder around the area (but not in the feed) and so far it has worked the best. It helped a lot to cut down number of fire ants, but still hasn't kept them out of the feed. So I am wanting to add talc to the feed, but i do not know how much i should add. googling reveled that producers add 2% talc to feed for broilers to increase weight and improve growth-feed ration. So if i can get pure talc, how much can i add to make it effective in keeping out fire ants but also safe for the chickens?