Find both entrances (you may have to do some recon/surveillance) cover them with clear pyrex dishes - wait until early evening hours when they've returned and are quiet.
Let the sun cook them for 5 to 7 days.
After the 2nd or 3rd day - it is awfully entertaining to watch the crew that was stinging/trying to sting you early in the week display some serious regret about that. "We're sorry for interrupting your mowing and stinging you. Please let us out!"
This post was edited on 9/6 at 11:12 am