Ant Block Home Perimeter ant control. Apply around the perimeter of the home to prevent ants from coming inside. Worker ants carry granules back to the colony thinking it is food. The queen eats the bait and dies, causing the colony to die. Ideal for use on lawns, landscaped areas, or around structures. Kills carpenter ants as well as 14 other ant species. Covers 1080 linear feet. 24 ounce bottle. Active ingredient: Hydramethylnon.