Did you find a solution? I am desperate! It doesn’t seem that the fire ants have mounds… looks as though they are just living inside the run… like that is their moundUnfortunately, chickens don't eat fire ants, but they love other ants. My backyard is inundated with fire ants that just keep moving around. I am currently using DE, but will look at the chicken dust when I go to Tractor supply. I'm in FL where fire ants have taken over.

There are millions of them and if I throw table scraps the chickens can’t even eat them because the amount of ants on the food!