Day 33 - Fire Ants

Fire ant attack. I hate the little suckers. I step off the pavement to let a car go by and this is what happens. Not only do they sting when they are on you, but it itches for days and days afterwards. The only thing I've found that lets me get some sleep is applying milk of  magnesia to the bumps.
Anyone have some perfect (and cheap) remedies?

Edit: I'm trying some vinegar and baking soda on a rag wrapped around my ankles. Working pretty well.