Also, when you treated them, did you have to protect their heads (eyes, nose, mouth, etc.)? Do you know if it works on the mites that burrow down into the shaft base of their feathers?
I was reading up on a post you made a few years back and I have a question. You went with using the diluted permethrin on your coop, run, and chickens and I was wondering how you applied it to the birds? Did you just mist them or did you move their feathers against the grain and spray onto exposed skin?