In this video we destroy a dangerous Yellow Jacket nest using Liquid Nitrogen. -200 degrees instantly freezes the yellow jacket colony. Check out the Youtube Shorts Version.
I dealt with that shit for several years working in the fertility lab. We used it for our frozen embryos. You better wear a glove because those burns can hurt.
I used to have fire ants in my front yard.....I'd just use a pole to create a big hole in the mound....and pour a few caps of gasoline down it......no more ants.