I was given a trio of white silkies a couple of weeks ago that had the most HIDEOUS overgorwn mites on their legs. Their scales were lifted up so high from mites that you couldn't even see some of their toes and their leg shanks looked twice as big. I asked a chicken friend what to do and she brought out some ivomec injectible and put a couple drops in each bird's mouth and told me to go home and rub their legs with vaseline all the way up and a little into the feathered part. I didn't have any vaseline so I used an old jar of Vicks Vapo Rub. She said to repeat the vaseline a few times, but honestly I haven't had time, and their feet look SO much better you wouldn't believe it. I was just looking at them a couple days ago and only the roo has a few overgrown scales on his legs and feet. The hens look like brand new. I was amazed. Good luck with it. Your case doesn't look anywhere NEAR as bad as the birds that I just cleared up. Don't skip the ivomec. I think that is what did most of it.