Syngenta - TRTD11568 - Optigard Ant Bait Gel Box - 4 Tubes w/Plunger - 30g each tube Target pests: For indoor and outdoor control of structure-invading ants including argentine ants, carpenter ants, and ghost ants and other nuisance ant pests; excluding fire, harvester and pharaoh ants. Highly attractive formula promotes ready transfer of the active ingredient throughout the colony Powerful, active ingredient knocks out workers, brood and queens Approved for use indoors and outdoors, applied in cracks and crevices. Active Ingredient: Thiamethoxam, .010%. How does Optigard Ant Bait Gel work? Ants that feed on the gel will return to their nest and transfer the bait to the queen and their young, thereby killing the queen, the young and the entire colony.