Dear bee list, I have been but a lowly net-lurker, and don't even raise bees, but I thought I might suggest a couple chemicals for mites. In our fruit-fly laboratory we sometimes get mite infestations. I have seen at least two species, and others may also attack the flies. Doubtless these are not verroa, but they are mites anyway. 1. Lindane-treated paper will kill mites that walk accross it. Lindane is 123456-hexachlorocyclohexane, or C6H6Cl6. 2. benzyl-benzoate (one part in 5 parts isopropanol) can be used to treat work surfaces. formula C14H12O2. Maybe someone would be interested in this information.