We have published about the amazing ability of bees to instantly recognize scents the the parts per quadrillion range. Also, we see bumblebee at our training feeders, as well as wasps. We seldom see other native bees.
We take extreme steps not to contaminate scent targets and controls, including using new, disposable gloves. Bees pick up on our scent, just as a deer does if a hunter is upwind.
They recognize us and our vehicles. That’s why we use micro- processor, solenoid controlled scent dispersers. We have to stay out of the test.
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