How do I get rid of ant infestation in my yard and everywhere outside?

Question

We live in California and a lot of sand and ants are infesting everywhere I can kill the top layer but its the underground ones I cant get rid of.

Answer 1

This article will help: https://www.gardeningknowhow.com/plant-problems/pests/insects/how-to-control-ants-in-lawns.htm