Starts to kill in minutes! Kills the queen & colony! Deep-reaching formula. Limits new mound formation. Ready to pour. Apply over & around mound. Product Facts: What It Does: Kills fire and queen and colony in 24 hours. Where to Use: Outdoors, on fire ant mounds. What It Does: For best results, apply in morning or evening hours. Spectracide Fire Ant Killer Mound Destroyer Granules are made with our exclusive Accelerator II technology, which speeds the release of the active ingredient into the mound.