Yes, this.
And, I think that the cap block they are nesting in may actually be hollow all the way to the end of the wall, which is probably 75’ - 100’ away. Lots of area to have an escape route.
OK, it’s done.
Sorry, no video. Too many things to juggle, and I think it would be pretty anti-climactic. I put on long pants and a long-sleeved shirt, put on the bee suit pants, then put on heavy boots, and made sure the pants legs were sealed by the elastic. I put on a hat, just for added head protection, then put on the top of the suit, and the gloves, and then went over to the hole in the wall and emptied most of a can of TriDie into the hive. As I was spraying, the bees started to make a scary humming that got louder and louder, as they tried to mount an offense, but I just kept spraying, and pretty soon the humming stopped.
I then sealed the opening with spray foam. I drilled some holes farther down the wall and sprayed some TriDie into them, then sealed them also.
The bees didn’t seem to know what hit them. They basically ignored me. I suspect that being covered up like that must make you somewhat invisible to them.
The suit is back in it’s ziplock bag, ready for the next time I need it.
Total savings - $130
I usually get the bees or hornets maybe, that nest in the ground. My go-to method now is to use an old vacuum cleaner and place it right at the hole. This might sound sick, but it’s kinda gratifying to hear them getting sucked up into the hose as soon as they fly out of the hole.