Use Corn Gluten To Control Weeds and Ants!
Corn Gluten Meal is a natural pre-emergent that safely inhibits the germination of grass and weed seeds.
It has also been used to effectively control ants. By putting the meal around ant hills, over time they will die off.
It comes in powder and granular formulations, and is available in most garden centers.
For more information read: Corn Gluten Meal