I noticed a few of my hens lower leg near the ankle had a few scales standing out. I read my health handbook, and it said for treatment and prevention- Mix 1 part kerosene to 2 parts linseed oil. Paint the mixture on roosts and their legs. In the mid-day I coated all of the roosts. When everyone went to bed I brushed it onto their legs. I am hoping that I have caught it soon enough that it will clear up quickly. It says I am to recoat their legs every 10 days until the problem clears up. Paint the roosts monthly for control. When everyone got up this morning I expected a gooey mess....nope everything looked ok. We have had a string of really hot days, I read that is when the mites, lice etc. really go bonkers.