I've got around 8-10 fire ant mounds in my backyard, and a puppy that has recently discovered a love for digging in them. We haven't let her out in the backyard unsupervised for the past week since the weather started warming up and the ants are now active.
I tried using Spectracide Fire Ant Killer Mound Destroyer a few days ago. It kind of worked. I followed the directions to the letter, and waited for the ensuing ant apocalypse. As of today when I checked on the ant mounds most of the ants were dead, but there were a few dozen survivors milling around when I poked a stick in half the mounds. The Spectracide claims to kill the entire colony and the queen in 24 hours. :/ Does anyone have a better product to recommend, or another method of killing them? I'd prefer something that's relatively pet-safe, since the ultimate goal is to let our dog roam free in the fenced backyard.
This is somewhat related to How can I get rid of ants in an environmently friendly way?, but I'm not too concerned about environmentally friendly. Just something that won't be hazardous to pets a week or so after it's applied.