We are having the most extreme wet weather following 4 years of drought. Most everything is beginning to mildew, including the inside walls of the coop. Not really sure how to get around this as the air is at 90-100% humidity over the last 7 days. The coop is ventilated well, but there is still mildew on the walls. I sprayed everything with diluted chlorine and wiped down, but I expect the mildew to return shortly if the air doesn't dry out. What do I look for in the chickens if they show signs of mildew sickness? They are staying outside when they can, but can't stay out all the time!