Virgil,
One of the problems with fire ants is that, unless you get the Queen, the colony will just move a few feet and start over again. Products like Amdro are designed to get the Queen by providing a poison bait that the worker ants will carry back to her and her attendants. When she dies, the colony dies with her.
A little known fact about fire ants is that they will cause fish kills....fish, especially BG, will eat them, usually after a large rain washes the fire ants into the pond, and it sometimes results in a fish kill...not often, but it does happen.
