When you have a bug problem, you want to ensure your efforts are as simple and effective as possible. Terro® liquid ant killer uses borax to kill the ants you see, as well as the ants you don't see. It works by allowing the forager ants to consume the product and survive long enough to carry the liquid back to the nest and deliver a dose to the rest of the colony. Complete control may take up to 2 weeks. For your convenience, the packaging conveniently comes apart to allow for easy placement.