Sugar and boric acid.. sprinkle around the hill and watch the ants work their magic and suicide. The corn meal works if you get rain soon after, the ants fill up on it and expand when they drink. The boric acid eats the decubidis off the larva and poisons the queen and colony. I know it seems horrible but have you ever been bitten? These little guys will light you up and they eat the quail and chicken chicks.