The ants have come back after a number of weeks. I think if an insect could be intelligent, it would be these ants. They've built their nests very high up in my golden chain tree where I can't get to them with a fiery torch. They behaved themselves for a long time staying on the fence line and not encroaching into our living space... until recently. Bite! Ouch! Bite! Ouch!
They have the ability to crawl up my legs undetected and crawl into the short pants I'm wearing. I have learned to do a respectable Irish jig since then.
So, I figured I will somehow interrupt their highway up and down the tree trunk. I discovered fly paper. I secure the fly paper to the tree trunk with push pins and seal any gaps with Vaseline. BRAVO! It works! The ants just gather in larger and larger numbers above and below the fly paper and seem to ponder how to defeat this latest challenge. So far, their engineers remain stumped on how to resolve this problem. And I walk around my yard now free to enjoy the whole space! Life is good.