Spectracide Fire Ant Shield Mound Destroyer Granules is a deep-reaching formula for use directly on fire ant mounds. Made with our exclusive Accelerator II technology to speed the release of the active ingredient into the mound, this product starts to kill in minutes. It kills the queen and colony in 24 hours and limits new mound formation. Use these granules to treat new mounds as they appear - sprinkle over and 2 feet around each mound.