Re: Something needs to change - looking for suggestions
OT, I for one am certain that genetic mite tolerance is real, but very rare in unselected bees. You could stand to import some genetics that have the trait in a selected form. It would make a dramatic difference in the way you manage mites. Said another way, as long as you treat for mites, you will continue to have problems with mites.
DarJones - 45 years, 10 colonies (max 40), sideliner, treatment free since 2005, 11 frame broodnest, small cell