Again after dark, an ounce or two of Sevin dust, or Permathrin dust, in the hole, and you have a sterile nest in the morning. The advantage here, is in not killing the vegetation. (and not dealing with gasoline).

I advised a lady, that had a nest, next to her kids swing, how to do it. She promptly obtained liquid Sevin, and poured it in the hole, in broad daylight. She damn near died from the stings.

Repeat after me, AT NIGHT !

Oddly enough, a ground neat of bumble bees, don't seem affected by Sevin. Go figure ?

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NRA Instructor