Ortho® Orthene® Fire Ant Killer kills the queen and destroys the mound. Watering-in is not necessary. Use it as a mound treatment for home lawns and around ornamental plants (including flowers, shrubs, and trees). Try not to disturb the mounds while treating. This product can be used along with Ortho® MAX™ Fire Ant Killer Broadcast Granules as part of the Fire Ant 2-Step Program. Ortho® Orthene® Fire Ant Killer is guaranteed to kill-or your money back.