Iíve taken out a large wasp nest using the following method:

1) Buy a large can of wasp spray, a type with a very long stream distance.
2) Wait for a night when itís cool enough that the wasps are dormant ó the Internet says 50 degrees F, and I remember it being closer to 55 degrees.
3) Spray entire can onto the nest, completely soaking same, from the furthest distance the spray can would support. I remember this being about 15 feet.

I would not attempt this technique if the air temperature is 60 degrees or higher. I would also not recommend any technique that uses fire as a component.