Depending on the regs down there, he tries to use any of that stuff and the authorities may end up being bigger pests than the yellow jackets...
It's a farm - you can use just about anything on a farm.
Use gasoline. My dad used it to commit yellow-jacket genocide many times while I was a kid in rural Alabama. The Yellow-jackets die on impact and it's still cheaper than the damn pesticides.
Not in Tallassee, believe me. A man's land is still part of his castle in that part of Alabama. Of course, don't ask, don't tell, still is the best policy.