I am looking for something to kill fire ants. I have 1 1/3 acres and have a fair number of ant mounds. The ant killer I am using seems to just move the ants to different locations. A friend of mine recommended that I use a product called Extinguish. Does anyone have any experience using this product? If it works well, where can it be purchased? I wanted to put some out if this is the time to do it. I have a broadcast spreader if it needs to be done over the entire lawn.