Diatomaceous earth or Sevin dust. I would use earth inside or around perimeter of house and dust on mounds or near plants.
I spritz ants with vinegar. Works well.
Hi Janice - Those little buggers are relentless, aren't they?!? This is the most effective method and all-natural spray DIY that we use with ants. It's best indoors, but will also work outside with more frequent applications. Hope this helps! Hugs, Holly