On the course, you can only watch. At home, use bait. Poison works, but the bait is literally 100%. I live in Houston. Andro. Gasoline and match works pretty well, but only if your wife doesn't see and they ain't near the house.
Here's a really interesting observation. Ten years ago, the number of fire ant piles in my yard was always greater than ten at any given time. Today, it is virtually zero. I see almost none on the course. Not zero, just way fewer. I don't think it is eradication. It could be global warming, or at least the hoax about global warming, or some other factor, but the change in piles is real. I've also seen a shift in weed types in my garden over the past ten years with different species coming and going.