We’ve been getting a lot of rain so the fire ant mounds are yuge. I poisoned over 30 mounds last week and there are at least ten new ones. I think that fire ant poison is krap. Gasoline is best but kills the grass.
I always used gas on them too... It’s sure fire to eliminate the mound but they just burrow underground and come out 10 or 20 ft away and make a new one. They’re seasonal so you don’t see them at all during the winter and fall months.
Laundry bleach or ammonia are less of an environmental hazard than gasoline. Both will kill the ants.
The Andro takes a while to kill the nest but does work
Pour boiling or at least very hot water into the fire ant nests and dust the area widely with diatomaceous earth. The boiling water destroys much of the nest and drives the ants out into the open. The diatomaceous earth (sharp silica dust, in essence) sticks to the ants and penetrates their joints, killing them. Boiling water and DE both work separately but are most effective when done together.
Orthene
smells like cabbage farts but is wicked death to fire ants