Lloyd Spear wrote: > One researcher, Zachary Huang, at Michigan State, has not > given up ... Good point Lloyd. I had forgotten Zach's work. He was at EAS at MMA showing his "Mite Zapper", which relies on wires through the drone brood which are electrified to heat (fry!) the varroa (and the drone brood) . The wires also melt the comb and it didn't look like a method that would lend itself to repeated use. However, Zachary was hitting the vendor tent seeking someone willing to incorporate his experiment in plastic, which would better withstand the heated wires. Certainly an interesting project and I wish him success. Regarding the original issue, the abandoned techniques involved heating the entire hive. I believe the work was being done in Germany, and I may be incorrect that it has been abandoned. Seems some "cobble" minded sort could work up some sort of solar arrangement to affect the heating. But there is still the problem of achieveing a temperature high enought to kill the varroa yet low enough not to kill the bees. I don't recall the exact temperatures, but they wer withing only a few degrees. Aaron Morris - thinking Man, it's hot in here!