Large20x20 large totally inclosed with heavy gage screen . Extreme rain wet muddy straw on ground .I find mites on my arms, face . Need to get rid of these almost microscopic things Anyone that can give advice please do so . Coop gets indirect sun light.
Welcome to BYC.
So sorry you are dealing with icky nasty bugs!
What part of the country/world are you in? Different methods may be needed depending on your location. We don't need or want your street address just general location works.
Is your run covered with a solid roof?
Is there straw in the coop AND run?
My best advice is to remove all bedding, spray the coop (every nook and cranny) with a permitherin based spray and treat your birds as well. You will have to repeat the treatment every 7-10 days to break the life cycle of mites and lice. I would do the treatment at least 3 times. This one is in ready to use formula.