Spectracide Fire Ant Shield Mound Destroyer Granules are made with our exclusive Accelerator II technology, which speeds the release of the active ingredient into the mound. This product kills the queen and the colony. The ready-to-use granules can be quickly applied around and over the mound. The deep-reaching formula starts to work in minutes to eliminate the colony and limit the formation of new mounds. For best results, apply in morning or evening hours.