Ever try Termidor SC (Fipronil)? Twice a year and the little buggers are gone!
Nope. I used to use “Durham’s Red Ant Balls” (Cyanide). that worked great. (Made a great fertilizer too... the next summer, where I had used them, the grass was 3X more lush than in any other place.
But then people started to use them for more nefarious purposes and that was the end of that.