Thanks, m. As soon as buddy said the nest had to be removed from the eave, I knew he was a ripoff artist but I knew I also had to get it resolved ASAP.

I also called the mason before that and asked him to call me back to give me the name of the spray he used. Hasn't called back but, when he does, I will tell him I had Orkin take care of the wasps and say, "Sometime in the next month, before freeze-up, when you are in town, drop by and seal the entrance... that's what I paid you to do."

I forgot, in the OP, to ask others to share their stories for the benefit of all.