Simply pour 2 cups of CLUB SODA directly in the center of a fire ant mound. The carbon dioxide in the water is heavier than air and displaces oxygen which suffocates the queen and the other ants. The whole colony will be dead within about two days. Each mound must be treated individually and a one liter bottle of club soda will kill 2 to 3 mounds. **I haven't tried this yet - I've got a couple of mounds that will be experimented one once I buy a bottle of soda water!