George, my place in the country had many huge fire ant mounds when I bought it; big enough, in fact, to stall the engine once on my B7100. /forums/images/graemlins/shocked.gif So, I'm not recommending it, but I just approached them very slowly after that and mowed'em down. It wasn't long until I didn't have any mounds of any size in the pasture since I kept it mowed. Probably, a better idea, if you have a front end loader, is to use it to level them out first, but I just didn't take the time to do that.