Does that perhaps depend on the species of wasp, or maybe the reach of the wand?
IIRC, there was one youtube video where the little bastards went straight for the dude's face during shop-vac'ing. He could smell the venom they were trying to spray in his eyes.
When one of the wasps (or hornets?) went straight for his GoPro sensor, its face filled my large monitor and I nearly had a heart attack.
My impression is that if you put a vacuum cleaner next to the entrance you may, if you're lucky, catch nearly all the wasps that leave the nest, but the queen never leaves the nest, and the eggs and larvae don't leave the nest, and I think there may also be some workers that stay in the nest looking after the larvae, so things will be quieter after you've finished vacuuming, but the colony will probably regenerate itself in a week or so.
With Vespex you don’t go looking for nests, you let the colony poison itself.
Because it is protein based and not sugar based, it’s not attractive to as many species. The downside is that the wasps only take it at a specific time of year - when they are consuming protein.
Soapy water is actually a powerful insecticide against many arthropods:
https://extension.colostate.edu/topic-areas/insects/insect-c...
We used a mix of vinegar, soap, and water in a spray bottle to rid our patio of earwigs this year and it seemed to work incredibly well. The insecticides we were spraying them with before trying the soap did absolutely nothing but cost $7 a can.
I once blew a few hours to anxiously watching youtube videos of people destroying nasty wasp/hornet infestations. (I'm still not sure why. Probably some mix of morbid fascination and aggression fantasy.)
The soapy-water-shopvac trick appeared in a lot of those videos. (Less commonly: thermite, or quad-propeller drones.)
What? have you seen size of that hornet? I am wearing space-suite if available.
Professionals wear PPE because if you incur a low-probability risk every time you do X, and you do X often enough (because it's your profession), X will happen to you.
For example, if you have a 99% chance of nothing going wrong, and you do that thing 500 times, it's essentially guaranteed to happen (0.99^500 = 0.0066).
The stinging insect removal guys will be stung if they are in the profession for decades without PPE.
Seems like you'd just have a huge pile of mostly-alive wasps in your shop-vac.
Partially fill a shop vac with soapy water, stick the nozzle as close to the nest entrance as possible, then turn on the vacuum and hear the wasps get sucked into the machine as they try to enter or exit the nest. It takes a few hours, and potentially a couple of separate sessions to mop up any stragglers.
No fancy beekeeper suit necessary, and, best of all, no need to spread nasty poisons.