I took in 7 hens a month ago ( new to chickens ) and noticed the legs on one of them are thick, grey and scaly. Im very certain its scaly leg mites. She seems to be the only one affected. I am heading to tractor supply to get some Vetrx, vasoline, and Vicks Vapo rub. What all should I be doing to rid this issue? The chicken coop is new, I clean it out once a week and have vinyl on the floor. Input would be awesome. Thank you!