The content of this thread reveals the desperation amongst beekeepers to find a suite of effective anti-Varroa tools. In my locale, there is a growing sense that beekeepers are overdependent on OA, and OAV in particular is not as effective as we'd like...or perhaps expect. We are hamstrung by a lack of understanding of exactly how OA targets the mites, a grasp of best delivery methods/schedules, and a paucity of control options. 

As a beekeeper I welcome the flow of research $$ into labs doing Varroa studies, and which are examining non-toxic Varroa control. Dr. Jack's study raises some interesting questions we'd all like to see answered.

On the topic of queen caging: here in northern, short-summer areas, particularly those with limited nectar flows, queen caging is not an option...or at least is not a good option. There are other ways to achieve the goal of queen caging (to render a colony broodless prior to treatment for Varroa) without sacrificing queen productivity.

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