Spectracide??? Maybe it was the species or something in the DNA of the "hornet"/"wasp" nest that I was spraying.....
I sneak up on them during a moonless dark night, and shove a tube on the end of a pole into the nest said tube's other end is in a reservoir of Gasoline in a soda bottle. Once the tube is in, I squeeze the bottle a few times, then drop everything, walk away, and in the morning, they are all dead.
Once in the early winter, I retrieved a 2 Foot diameter Black Hornet nest that was a mere 10 or 15 feet from my winter wood stacks that I'd been stacking and in a courtyard where I'd been mowing and never once knew the nest was there. They built it all through that spring, summer, and fall, and my activity never once bothered them. But when I saw the nest, it chilled me right through. I let them complete their life cycle and harvested the mostly abandoned nest. there were still guards (dead) stationed at the entrance guarding the nest.
One Fall some years ago I bedded a Queen Yellow Jacket. They are not very good lovers. She penetrated me, making me her *****, till howling, I leaped from the bed and proceeded to pound the covers around where my feet were. I got her. She was huge. And so my foot and ankle became huge too. It took me a few years to feel safe in bed again.
I think she got in the house, found the mattress under the covers, and decided it would be a good place to winter over and start a new brood.