We're pretty well at the end of yellow jackets peak, when cold sets in you should be fine and most likely are dead come spring.

Konrad

thanks. I am concerned that they will use the nest again next spring, or summer, and I would like to prevent that since it is right next to the sidewalk, and they get agitated if you stand in front of it, which I frequently do to tend to plants. should I try to fill it in with something organic that they can't drill through. It is in a big bed of Ivy under a huge norway spruce, but the entrance hole is very obvious when they start flying in and out, which they do like crazy if you are three feet from it. They haven't bitten me though, they just buzz past me front and back at a furious rate. They encourage me to move out of the way. I don't know how they figure I am standing there in the direct line of flight.

Sure...fill in the hole early spring , a slurry of soil water mix.
You probably need a couple of re-fills after drying up.

Konrad