We've got red mite :( lots of them :(
Tonight I've pressure washed the coop, then sprayed it with barrier red mite concentrate, then sprinkled diatom earth powder in the nest boxes and crevices, and on the chickens.
What else can I do? I was planning on repeating the above in five days.
I've seen MissB's suggestion of creosote, but I don't have anywhere else to putt the chickens for three days while it driess.
I feel really down that I've allowed it to happen. Poor chooks :(