> screened bottoms -- allow one to non-invasively screen for mites
I assume you are referring to opening up the hive and taking a sample. The implication being that this procedure is "invasive." I object to anything that encourages the idea that opening up bee hives is somehow invasive. I always tell beginners to open the hives as often as they want. They learn to be better beekeepers by doing it, not by watching it.
PLB
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