Haven't read all the posts , just to many, but remember an ounce of prevention is worth a pound of cure.
I dust with DE all the roosts, inside the nest boxes everytime I change the hay and dust everywhere in the coop every time I clean. I dust the floors real well. I even make sure I toss a good amount into the wood chips. I can't say for sure but using Exprinex may help too. I haven't seen and mites so far. I try to keep things as dry as possible. You might want to give the roosts a good brushing with mineral oil, soak it into the wood, then a dusting with DE.
I wish everyone a cootie free coop,
Rancher
I dust with DE all the roosts, inside the nest boxes everytime I change the hay and dust everywhere in the coop every time I clean. I dust the floors real well. I even make sure I toss a good amount into the wood chips. I can't say for sure but using Exprinex may help too. I haven't seen and mites so far. I try to keep things as dry as possible. You might want to give the roosts a good brushing with mineral oil, soak it into the wood, then a dusting with DE.
I wish everyone a cootie free coop,
Rancher