When I run over ground hornets, I drive away at usual mowing speed, they never chase.
We had a bald face hornet nest on the side of the shed, a couple years ago.
I have a decal stuck on the garage door of the VT Hokie bird, around the corner from where the nest was.
Well, I sprayed that nest with insecticide from 30 feet away, and ran to the screened porch, which is about 50 feet away.
When the hornets started coming out of that nest, They started flying,,, looking for somebody.
They saw the Hokie bird decal, and started slamming into the eyes of the decal, I could see them, and hear the hits on the thin steel garage door.
That encounter taught me to respect those insects,,, future sprays were done after dark
It took three sprayings to eliminate the hornets.
Those hornets were not homing in on CO2,,, they KNEW what eyes look like,,,
I always thought CO2 was a mosquito thing??
