I was only concerned because they got mites last year (first time ever) probably from wild birds....and a couple of the older roos - their legs looked....best way I can describe it, was it looked like they could use a bit of lotion! They didn't look like they show in pictures (or maybe that is because the pictures tend to be bad cases????) But, you can't see the leg mites, only the damage they cause/poop they leave around the edge of the scales - at least that is my understanding. So, I decided to treat them just in case, since it is a benign treatment if they don't. So every Sat for the past 3 weeks, 2rds of the chooks I dunked their legs in oil. It was just too time consuming to do all at once - I took them out of the coop one by one dunked each leg, made sure the oil was up to the top of their 'ankle', and set them down, got another from the coop. I should have started the remaining 1/3 today, but I decided to take a break from that and work on other things and spend some time with hubby (our 10 yr. anniversary was this week) So, next week will start the weekly dunking of the remaining chooks. (I used linseed oil for this)