In the control of mites, as a former biology major, it would seem to me
that a microscopic investigation into the mites themselves might provide
the biologiacl controls that are needed to either control, or eliminate,
the mite problem.  This type of researce would cost money and take time.
Ergo, this might be a project for some honey council(s) to fund.  I t
weems to me that a biological control would be a lot more effective
combatant than any chemical control.  Those ites ore in the brachiaii of
the bees.  Hard area for chaemicals to get to.