Go to the nearest fireworks stand and get some smoke bombs. Get something to sit them on that will allow you to set them off close enough to the nest that the smoke reaches it. Set them off on the something. Run to another entrance into your house. Get them to go look at the wasp nest. If you succeeded, you will see so many wasps they won't even want to leave the house.
If you're REALLY lucky, it will have exterminated the nest, though.