We just put down one of our old ISA brown hens. She was getting slower and less vital every day. She had really runny poo that was sticking to her feathers, so, her time had come. The upside of this was that I got to have a good look through her feathers. She was crawling with little red mites. Our other hens are too skittish to catch and examine. We got the birds as culls from a family member who won't keep them if they're not cuddly. I don't care I just like chickens and eggs. They all free range all over the property, so my question is this. Do they pick them up from other creatures on the property(Pacific Northwest), and will DE actually do any good if I dust them with it. I dusted their coop after thoroughly cleaning. Also did their nestboxes but haven't done the hens. We only have six birds now, and my brother-in-law says he'll help me catch and dust them after they go back to the coop, but if DE isn't going to work I don't want to upset them unnecessarily. Any feedback welcome. Thanks.