Corn meal (a 5 lb box/ acre) works well. The ants take it back to their nests, where it gets eaten. The meal then swells in side of them, killing the ants. You can also pour it directly on to mounds.
Also for mounds- pour boiling water in to them, too. That way you are sure to get the queen.
Another tip to keep them from coming in to the house is to lay down a barrier with either ground up chalk or Cinnamon. They won't cross it for some reason. |