any ideas of how to treat for varroa when the temp. is cold? Found a dead bee on the landing board this AM, 39 degrees outside, predicted the same or 5 degrees cooler tonight. The bee had one set of tiny deformed wings, and one set of normal wings, making me think of varroa mites. No mites seen on the dead bee... I'm guessing the oils and menthol wouldn't work properly without it being very warm. thanks for any thoughts.