Well, it took a while, but I finally tried the boiling water method. I didn't take much time to prep, I more or less just poured about a gallon water over the relatively small nest. It killed them all! It also killed the grass that it touched, so that's something to think about also... had the ants been allowed to keep growing, they would have killed the grass anyway, so it's really a wash. I think to improve the effectiveness, I would stir up the nest good to get the ants to boil to the surface and then douse them good. I think this way a larger nest could be taken out with a similar amount of water.
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