I got some chickens from a friend who I'm treating for scaley leg mites, mites, and I'm guessing they have worms too because they have diarrhea. We bathed them with a dash of anti bacterial soap and apple cedar vinegar raw and organic, we also scrubbed their legs. One chicken had her legs worse than the others, she even had raw skin and her scales were peeling off as we were cleaning and rubbing A&D then petroleum jelly on her. We put it on after the chickens dried, then dusted them with DE and put 4 drops of ivermectin on them. Another chicken looked the healthiest and her legs weren't that bad, but when we bathed her, we noticed her butt was bald and pretty red. I saw these ball clumps on each feather follicle and knew it was something to do with mites from when I was researching about them and stumbled on a picture, but I did forget, what is that ball of clump on the feather follicle? I put petroleum jelly on her butt and am wondering if I what I did was right? I figured the jelly would suffocate the mites like they do on the legs and also calm and heal her skin since it was so irritated. Also I found today that not all of them have diarrhea since I found some normal solid stool. So why do some chickens in the same flock get infected more than others? Also, does anyone know how long to withdraw eggs for? and if I need to treat with ivermectin again? and how often to coat jelly on their legs? and how to know when they're cured and I can add them with my other chickens?