I live in a condo area and i hear wasps in the wall? What should i do?

Question:I see them outside hovering .. .looks like they found a tiny opening to get into the attic.
I hear the queen leaves around october or so.. and then all is cool..
Anybody have any suggestions or even better experience.
I can't physically see any hive or anything..
But getting annoying hearing them in the morning buzzing.

Answers:
Call exterminators. Terminex, anything. You can't take chances. Get them killed ASAP. Also see if you can go to live someplace else until they are gone.

I'd much rather have squirrels in the attic than bees or wasps.