Hi, welcome to the forum! Glad you joined!
I use tree limbs with the bark still on and 2x4's upright, not flat.
This is the hardest one to talk about. Red mites can live in your roosts if they can find cracks or spaces. They only come out when it is dark, so they are not usually a problem in daytime. Even if you seal your roosts so mites cannot use them, they can usually find other places to hide like walls, bedding, or the nests. You may get some benefit regarding mites if you seal the roosts but I'm not convinced it is much. The way I approach mite control is to inspect them off of the roosts at night to see if there is really an issue and treat as necessary. So far, I haven't found any. Growing up on the farm many years ago Dad found mites twice over 20 years and treated for them. Some people have huge problems with mite, they show up all of the time. Others of us don't have those problems.
Totally not an issue.
and make cleaning easier.
I never clean mine, it is not an issue. Poop just does not build up. Some people on here really freak out at the thought of a poop stain. Clean, clean, clean. They usually don't last that long with chickens unless they change their attitude a bit. I'm not talking a pile of poop, just a stain. You will have to determine what standards you keep. Poop does not build up on my roosts. My 2x4's are on edge, not flat, so I don't know if that makes any real difference.
It is good to ask these things and get opinions. You can usually get a lot of different opinions on this forum no matter what the topic. Some people do treat the roosts against mites, whether with paints or something else. Hopefully some of them will show up on this thread and speak from their experience. But I have not seen a reason to seal or treat my roosts against mites.
Good luck and once again,
