Wife had called around and someone came by about 5:30. Said he could deal with it for $150. Didn't have any protective gear and had a sprayer. We went inside and in about half an hour he had it cleaned up and ready to leave. There were only a couple dead ones on the driveway left.
Pros don't tend to waste time on protective gear. If you know how to approach it within reach of freeze spray and drop the guards before they can release attack pheromone, the returning workers won't be coming back super angry. Speed is your friend, as is knowledge of nest construction.
Your homework now is to make sure the surface is clean of nest materials they might want to rebuild on.
For my part, I only have a bee suit because the first one of these I had to deal with was only reachable from a ladder, and I didn't want to worry about the risk of falling off reacting to stings. But now that I have it, it's gotten lots of use.
One trick I use for in-ground yellow jackets is to fill a tube with Sevin then blow it into the hole (after dark). You might have been able to do this with a long pole and an air compressor. The shop-vac trick has also worked well though you have to let it run awhile.
Going back to my first one of these, I tried four cans of spray from that ladder, one in each hand at a time, trying to get as much as possible into the entrance. The hive returned to full activity within a couple of days. I ended up buying a 10' length of EMT, got a compression to 1/2" rigid elbow that I could screw into a ball valve that I put an air compressor fitting onto, and used a pair of Vise Grips as a second handle. A teaspoon of Sevin rolled up inside a square of toilet paper was rammed at least 6' into the EMT and the compressed air sent the TP/Sevin projectile flying with enough force to puncture the hive. It didn't exit out the top, BUT I did see fine clouds of dust escape from the vents at the top. Within a few days I cut the dead hive down.
However, I will offer some caution regarding Sevin. It's SLOW to act. The 5% carbaryl isn't all that effective, and the main potency comes from the 95% diatomaceous earth. That can take days to kill insects, though it is VERY effective. My wife once lit up a ground nest I had just doused with Sevin with a flashlight and ended up stung by a guard that was so heavily dusted that it looked entirely white as a ghost. I can take hours for the Sevin to take effect.
Delta Dust is pyrethroid based (a synthetic type of permethrin specifically) that will drop insects in seconds. Drione Dust is much stronger and should drop insects in under a second, but I've had bad issues with it clumping.
Wait till darker and cooled get a can of the streaming wasp killer. NOT THE FOAM ITS USELESS.
Then calmly focus the spray stream in the entrance hole only , don`t bother coating the outside.
Thats a big nest so may need a second helping the next evening.
I do this all the time ,never been stung and the nest always dies.
So I'll let you in on a secret. Kerosene foams when sprayed. Kerosene is the "inactive ingredient" in all (except water based) aerosol wasp sprays, and it is also the chemical that causes wasps to cease being able to fly almost instantly, though it does not stop them from stinging or crawling. Regular wasp sprays have defoaming agents added (even pump kerosene has a little, and FYI so does gasoline). There's nothing special about foaming sprays being useless, and there may not even be a foaming agent added. It's the pyrethroids that leave the insects a twitching ball on the ground, and the synergist (piperonyl butoxide) that speeds this process up ten-fold.
In my ladder example above, I was about 6' from the nest. WELL WITHIN the reach of a concentrated stream of spray. Even so, four cans aimed in the entrance didn't create enough mist inside to kill the upper tiers. Liquid runs down, and these nests are built to withstand rain. I suppose if you were with a foot of the hole, the spray could possibly make it up, but in my more recent trash can example, I used one full can shot within inches of the hole, and the garbage pail was buzzing for days. I believe my issue was because workers coming out to attack me plugged the exit, breaking up the stream, and yes, foam would have the same effect. They might have cleared the opening and been depleted enough for me to use a second can the next day, but by then I already had it bagged.