About 25 years ago the utility companies came through the neighborhood and ran new phone & cable at the same time through the easement at the very back of everyone's yard. One day I came home from work and saw a fresh open trench for many houses as far as line of sight in both directions. I was impressed. Then I noticed a few feet of dirt in my back yard that had not dug up at all. The next morning at dawn there was a knock on my door and it was the contractor company doing the trenching. The guy introduced himself and showed me his credentials.
Then he asked me "did you know you have giant ground bumble bees in your back yard."
Mega thousands of dollars of equipment and a large work crew had come to a stop because of bumble bees. He suggested I let them squirt diesel on the area.
Nope, not gonna happen. I did not want the trees and grass all to die. I was big into the hobby of roses so I grabbed a bottle of Malathion and made a pretty concentrated (more than normal levels) of spray and got my good sprayer and set it to stream and pumped it to max pressure. I started squirting and they would come up and out and die in a few feet. When they quit coming out I just poured the rest in the holes.
They fired up the trenchers and finished up the work.