I had a bad wasp problem that I simply wasn't able to get rid of on my own. I bought nearly every wasp insecticide that Home Depot had to offer....short of a flamethrower. Try as I might - I couldn't get rid of these little demons.
I called Leap Pest Control - and after explaining the situation....they explained how they would eradicate them. So - I had them come out and take care of the problem.
2 guys showed up - on time, and ready to go! They were able to assess the problem...determine the entry points (they were getting behind the bricks through some cracks in the mortar)....and quickly went about taking care of the situation. They showed me what they did, how they did it....and promised to come back should the wasps make a return.
I'm happy to say the wasps didn't come back...and I was very happy to be able to sit on my deck - and not be bothered by wasps anymore!