High varroa

[pargyle]

Err there was study done (reference is somewhere) showing that levels of OA in honey after vaping did not increase significantly. If you think about it, if honey is capped then the crystals cannot enter...and if it isn't the surface area is small compared to all the other surface areas in the hive.

To get back to the original post the important aspect is that the bees get treated for varroa...any honey contamination is pretty irrelevant. If the bees die there won't be any more honey. And if you need to treat all the phoretic mites then bees in supers need treating as well as those in brood boxes.

Perhaps read a bit more of my original post then ?

"If the supers have to be left on the hives I would put a clearer board underneath them, let the bees come out of the supers, then vape - more chance of getting any phoretic mites that may have been on the bees in the supers, the OA sublimate won't go up through the clearer board. Leave the clearer board on for 24 hrs by which time the residue will have dispersed significantly."