Combat Ant Killing Gel. Kills ants and the colony within hours. Lasts up to one month. Contains Fipronil the food ants prefer. Foraging ants return to the colony and feed the bait to larvae and queens entire colony is killed through the Domino Effect. Effective against argentine, carpenter, cornfield, pharaoh, white footed, odorous house, pavement little black ants. One 27-gram applicator per box; 12 boxes per case.