Diatomaceous Earth powder worked for removing ants from our kitchen. Ants usually find their way into our kitchen after a rain shower. In the past, we have tried Borax, peppermint oil, water barrier and glass cleaner to no avail. After sprinkling some D.E. around the floor by the refrigerator and around the sink and window sill, there have not been any ants spotted in over a couple weeks. I'm confident that is what finally worked. This is also safe to use around our dog and family. Take care to not inhale the fine powder as you disperse it.