TERRO Outdoor Liquid Ant Bait Stakes contain the proven TERRO liquid bait formulation, now delivered in an easy-to-use outdoor stake. The only liquid bait stake available on the market, it provides fast-acting elimination of the queen and entire colony. Best use for attracting and killing all common household ants including Argentine ants, ghost ants, cornfield ants, pavement ants, acrobat ants, white footed ants, little black ants, odorous house ants and other sweet-eating ants. While the active ingredient in TERRO Outdoor Liquid Ant Bait Stakes will ultimately kill the worker ant, it works slowly so that the ants have time to get back and share the ant bait with the rest of the colony, including the queen. This slow kill allows for the foraging ants to make several trips to the bait and deliver enough bait to the rest of the colony.