I'm experimenting with a new mite management technique; centralizing drone brood on a specially sized frame (drone cells are distinctly larger than worker cells), and then freezing it.
it's like a trap; varroa mites love the longer incubation period of drone brood, so by concentrating it on a single frame, the theory is that you can dramatically reduce the mite population in a hive by freezing the entire frame once it's capped.
here you can see the drone comb almost drawn:
and fully capped, ready for the freezer:
generally, honeybees produce an excess of drones, so the death of such a large portion of the drone population is not necessarily a loss for the hive...at least in terms of honey production.