Two of my Buff Orpington hens got broody so I put half a dozen eggs under each and they've been sitting on them for two weeks, my first time at trying hatching at home. They have one small coop to themselves and the rest of my flock is in an adjacent paddock and coop. Just found yesterday the broody hens are heavily infected with mites (?). They were all over over the outside lid of the nesting boxes and covered my hands when I touched the coop. Last night inspecting my hens I could see the same tiny little dark creatures all through their feathers, northern fowl type? I'm in Maine, we had a warmer sunny about 50F yesterday, the warmest in a while. I read some posts here and got some Sevin and some diatomateous earth today. I'm thinking of dusting with Sevin to stop the mites and then some DE for maintenance and for the rest of my flock in the other coop. Should I change bedding in the coop and nests or wait until after hatching so I don't disturb the hens too much> Also, one hen broke an egg early on and the rest of the eggs and nest are pretty dirty. I'm worried about contamination. Should I just hope for the best or replace the eggs and hope the hen will sit on them for a new incubation period? Thanks for help with my newbie questions!