The countrys original ant killer, TERRO Liquid Ant Killer, provides fast-acting elimination of the ants you see and the ants you don't. With the goal of attracting and killing all common household ants, the liquid bait is specifically designed using the active ingredient Borax- to give the foraging ants enough time to share the bait with the rest of the unsuspecting colony. To kill 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 - simply place the ant killer liquid on the squares of cardboard provided, sit back and relax. Your work is done.