Ant Block kills ants outside so they can't come inside. Treats up to 1080 linear feet when used as a 1 foot band around the house. Granules are carried directly into the mound by workers as food for the colony. When the queen is dead, the mound dies. Kills Carpenter, Texas Leaf Cutting, Argentine, Acrobat, Big Headed, Cornfield, Crazy, Field, Fire, Ghost, Harvester, Odorous, Pavement, Pharaoh, and Thief ants.