Hi, my chicks are 6wks old and still just on starter feed. But I read so much about DE, I have a few questions. Do the chickens EAT this stuff? Or is it just for pest control/drying out their poops? I use in my garden, from Home Depot: Safer Brand Diatomaceous Earth, Ant and Crawling Insect Killer, DE PLUS with patented baits. Is this the correct kind of DE that I should put in my coop and run and/or in their food?? It isn't Pool Grade, it is safe for use in my garden (I do wash it off) so is this the correct kind or do I need to get DE from the feed store? Thanks!