> Are there any studies or research to indicate a > correlation between hot seasons and diminishing varroa population On a remotely related note, I have recently visited beekeepers in the New Independant States of the former Soviet Union. Some of them use a heat chamber that contains a rotating caged drum screen. A whole hive of bees is dumped in and rolled around inside the drum to shed the mites. This method seems complex, labor intensive and stressful to the bees. But I wonder if it is effective in eliminating the mites. Does anyone have any information on this system? I have never seen any thing written about it here in the USA. Cesar Flores Colorado