Fire ants are getting into my flower pots. A few pots I watered heavily and moved the pots and those ants are gone. Two 10 gallon pots I am still having trouble with. The ants are still in the pots after lots of water and even using diatomaceous earth has not eradicated the ants. I don't like using poisonous chemicals, there are many Carolina anole (lizards), as well as birds in my yard.
Any suggestions on how to get these pests gone for good?