I had an infestation of large brown wasps under the roof of my shed. I think there was 4 on one side and 2 on the other. The only thing I had available was diesel. I put about a gallon in my pump up garden sprayer and hit them with that. It wasnt an instant kill like gasoline, but also not as flammable. It did the trick. What I didnt realize is that someone had knocked down a nest which landed right by my front tractor tire which was flat with thorn puncture and needed to be fixed. I started loosing the lug bolts and had them all loose, then decided that I needed to use the FEL to raise the tire up off the ground. When is stepped across the nest to get on the tractor, nothing happened. When I jumped off the tractor, I stepped right on a portion of the next and they came for me. I got away from all but one. It wasnt a big next, maybe 50 wasp. I gave them a moment to settle back on the nest, then found a lid from my trash can. Got back over there, tossed the lid over the nest and did a Mexican hat dance on it. There must have been a bunch of wasp off hunting because for the next week, everyday, I had to crank up my diesel sprayer and spray spots on the ceiling where a dozen or so would congregate. They especially liked my outdoor spotlight. I never saw so many of those wasps. HUGE SOB at least 2" long and they just kept coming. I hope I got most of them since I had to leave home and come back to work and leave THEM to their work