I am planning on building the CalKenya type top-bar hive that is on the "alternative designs" link on the home page. I'm building it out of wood though. Is it necessary to place a mite screen in the hive? I figure that since I'm putting a lot of time into building it, I might as well install one. Thoughts?
I've done them with and without. It depends on how complicated you want it and how much you want to work. I think they are useful, but I also think part of the appeal of a TBH is to keep it simple.