I know of one other, in which I contributed, from 6 months ago. At that time only 2 beekeepers with experience using the product joined the discussion.
Yes it does, maybe I've not given it enough time for others to report.Looks like that is still the case unfortunately.
No, you shouldn't use it when supers are on, but you can between the harvests. The Varromed works very well in hot weather. It seems the 1 % formic acid is an absolut killer when ambient temperatures are hot. Mites drop in large numbers then. Bees are fine.Can you use it with honey supers in place? Is there a danger in harming colony if used in very hot temperatures?