I am not usually overly bothered by wasps, but I was welding on a trailer one day and they seemed to be irritated. I turned off the torch and looked around. Oops their nest was in the coil spring on the trailer. That wasn't going to work. I fired up the torch, re-adjusted it and tested the flame length. I put the heat near their home and hit the oxygen lever. 1 1/2 foot of flame solved the problem for me. Crispy critters.