Bob, I don't think is any evidence that bees can remove varroa mites *through* the hole in the drone cap, if this is what you are saying. I don't even see how it is possible. The hole is *too small* and how would they reach in there and grab it, anyway?

> A central, funnel-like pore in the conical cap (measuring 0.3 mm in depth and 0.25-0.50 mm in diameter) is typical for A. cerana drone brood cells. The adult mite is reddish-brown in color; has a flat, button shape; is 1–1.8 mm long and 1.5–2 mm wide

Pete

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