Why waste the aluminum? Old southern solution;
Get regular (not instant) grits right out of the box. Sprinkle it around the mound. Do not sprinkle it on the mound. The workers come out and find all of this new wonderful food and take it down for the drones and queen.
So when they add the water in their systems, they just blow up, the mound is now dead.
BTW, this works for all types of ants.
There are way easier ways to kill fire ants. But none nearly as geeky cool. Or as profitable!
Dead fire ants == $2500 right now.
Got plenty of mounds, will give that a try.
Why waste the aluminum? Old southern solution;
I have used this for years. The instant grits really work. I use it for fire ants. The fire ants have killed off other ants. The other ants used to provide food for our horny toad (horned lizard). As a result of those fire ants killing the other ants, our horny toad population has been decimated.
So...I only kill fire ants.