Nests can often be spotted hanging from awnings, window ledges, rafters, roofs, and railings. Spray wasp nests only at dawn or dusk when nearly all members of the colony are in the nest and less likely to leave and sting you. You might also want to check out our video “How To Beat Wasps and Hornets”: http://po.st/GqVySC
Put a bugzapper near the location for a few days until they are all fried.
Pay very close attention to where they are going in and out. Wait until night when it is dark. They will be in for the night. Buy a can of wasp and hornet spray and shoot into all of the locations Tomorrow morning you should see a pile of dead wasps on the ground. .
They keep flying in and out of my brick wall on my house and they keep flying out of little holes on my PVC frame aswell