What kind of ants? The only thing that works with fire ants is Amdro.
Pour equal parts water and white vinegar into a spray bottle. Then spray it on anthills and around areas where you see the insects. Ants hate the smell of vinegar. It won't take long for them to move on to better-smelling quarters.
Here's a simple DIY recipe to deal with ants inside
Hi Amanda - 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
PS - We have a FREE eBook with recipes for all of my homemade and all-natural cleaners. You can download it here --> https://pinkfortitude.com/thank#GreenClean
Sprinkle the ant hill with instant grits. They eat them and expand in their bodies which kills them.