It might be easier and less messy if you use the Terro liquid bait traps, if indoors. They work instantly.
Looking for a recipe for fire ants
Try shacklee product, Basic H
Here's what one Hometalker uses
Here are some ideas for you.
Amdro Ant bait; sprays/liquid just kills the ants you see walking around,the granules they carry back to colony kills the whole thing and quickly. put it right next to trail or outer edge of mound don't disturb trail or mound they won't pick it up as quickly then they take back into colony. works fast 2-24hrs. gone. then clean up any left over bait,cover it to keep out kids,pets it is poison just don't block trail so they keep working carrying back to colony.
Hi Carolyn - Those little buggers are relentless, aren't they?!? This is the most effective method and all-natural spray DIY that we use with ants. It's best indoors, but will also work outside with more frequent applications. Hope this helps! Hugs, Holly