hey kauaidundee I am currently dealing with the same thing. Hydroponic shop recommended me that I go to home depot and get the ecosmart organic insect killer granular I was going to try it tomorrow. I have used the http://www.homedepot.com/buy/outdoors-garden-center-animal-pest-control-insect-mosquito/ecosmart-24-oz-ready-to-use-organic-garden-insect-killer-187416.html before and it works without harming my plants, but it looks like the ants are burrowing so I figured that the granular would work best.