Terro Ant Killer - Liquid Ant Bait kills all species of sweet feeding ants including little black ants... odorous house ants... argentine ants... pharoah ants... carpenter ants and others. Simply pour a dime to nickel size amount of Terro PCO into a bottle cap (or something like it), and lay flat in areas close to ant trails or known activity. Ants feed on the Terro liquid ant bait and die. Contains natural ingredients.