Eliminating Fire Any Colonies, Pests from Your Garden: Organic Gardening (click on link)
For those of us living in the south, we struggle with a problem our friends in the north do not...Fire Ants. These ants have a nasty habit of swarming when their mound is disturbed and biting, biting, biting which leaves welts on your skin that itch like the dickens. If you scratch them the resulting scab remains for weeks and weeks at a time. Rubbing alcohol applied immediately after being bitten seems to reduce or even prevent the welt from forming. They are a gift from south of the boarder and have been making their way into the US. Areas that don't experience a hard frost are plagued with them. Most folks use "Fire Ant" killer, a harsh chemical that does destroy the mount but it's not something you want to put in your vegetable beds and by transfere eat it yourself.
I wanted to share this information from the Organic Gardening magazine people cause I used one of the suggestions. Earlier in the year as I was moving from my winter garden to my summer garden I had several fire ant mounds in at least two of my 4' x 4' boxes. With the help of a visiting family member, we poured at least 3 - 4 gallons of scalding hot water on each of the mounds and it worked. The ant colony was destroyed and I have been ant "free" in those boxes ever since.