Yellow jacket powder update. Works like a charm. Poured around four nests at Dawn. Three dead within a couple hours. Fourth one is a monster and yellow jackets still visible. First one I dug up is volleyball sized. Spray wasn't working they were deep under the wood.
You have to be careful this time of year. That's when the nests get huge. I've had three major attacks in my line of work. All in the fall. In two , I was stung in the teens and twenties. One in the hundreds.