Corn Meal for Killing Ants
I have also used cornmeal outside around the foundation of the house if spring; and I see no ants in the vicinity all summer!!!
Recipe for Killing Ants?
I mix equal parts vinegar and water and put in a spray bottle (be sure to label it!!) Ants will not come anywhere near where it has been sprayed. And it is safe around pets, kids, and environment.