This is the only product I have used that WORKS. I use on the established mounds, just 2 tablespoons even on a big mound, and a few weeks later: totally gone. No rebuild! The trick is you must be patient as it does take a few weeks to collapse the mound, sometimes sooner. You will see signs of slowing down in a few days. Great product!
I used this for the first time last year in my horse pastures because it was one of the few pesticides approved for pastures. Instead of a dozen or so fireant mounds/acre, I ended up with maybe one/acre which I treated again individually. What a difference!! I used a simple hand held seed spinner on a low setting and spaced my rows 30" apart. No need to cover every inch....the ants come to the bait :)