We're having a heat wave here, it was 35°c (95°f) here yesterday! It was a little cooler today, and it cools down at night to 21°c (70°f). So, no huddling by the fire with creaking joints
Those ants sound like leafcutter ants, the bane of every tropical garden. We have bait here that kills the nest, it's called Trompa, and I have no qualms about using it. I'm sure that ants will inherit the earth and live in splendor in the crabgrass. We have dozens of types of ants, from the almost microscopic to the huge with wings. I don't like any of them.