Try some of these ideas: https://www.craftylittlegnome.com/how-to-kill-ants-with-borax-make-diy-ant-trap/
You could try this! https://www.hometalk.com/18035067/the-very-best-homemade-diy-ant-killer
I use Terra ant killer. It works quickly. You can get it at most hardware stores. Home Depot and Amazon is where I get mine.
Inside: Diatomaceous earth spread around will kill them but they do have to come in contact with the product. Food grade is safe for contact with humans and pets.
Outside: Boiling water in the center of the mound or Jiffy corn muffin mix or Sevin.
Hi Juanita - 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. It's even been featured on Hometalk! 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