Andy, they have been getting in our house as well and we don't know how. For years they have been getting into our bedroom/bathroom upstairs. When my mom in law and father in law owned the house, my father in law got stung in the back and butt as they slept, quite a few times. When Wes took over the house, he redid the roof and such. We still get visitors, but not as many. I found a couple up there in the last few days, although they aren't flying since they are cold.
I am pretty good with getting the ground level nests. There are some you couldn't pay me enough to climb too. We have a nest in the ground under our air conditioner unit on the side of the house. Those wasps, get brutal.
We have carpenter bees that have chewed into the wood on our front deck. Little bastiages...
I have to keep Epipen kits in the house. I am very allergic to these varmits. And Zach's doctor thinks he may be as well, due to the swelling of the actual bit he receives from a single mosquito.