When you see ants raiding your kitchen, the natural instinct is to squash them on the spot. But if you want to naturally eradicate ants, the best strategy is to leave them alone. Leaving ants alone will let them bring back bait that can kill the colony. All you do is mix sugar and borax -- a natural mineral -- together. They’ll be attracted to the sugar and will take back both sugar and borax granules to their home. Borax is a natural insecticide, and within 24 to 48 hours, the ants should be gone.