I have been using a gas powered weed eater for the past three years, a replacement for an antique scythe which I like better but needs more energy than I now possess. Neither tool bothers my bees at all.
Interesting..... most of my yards will great me at the truck as soon as I wind up the weedeater. Seems the whistle of the head is what does it..... but just a guess.
My comment about piping queens is that is obviously is something other queens "hear" as they respond to it.
Charles
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