Answer: Since you plan to repot anyway, take the plant outdoors and wash away all of the old soil from the roots(to get rid of any ant eggs). Then repot in fresh soil. Ants like to nest in places where they won't be disturbed and where there's enough moisture, but not too much. That's why you'll find anthills near the driveway where it's dry, but not in lush, green lawn areas. If you water thoroughly each time you water, by soaking the pot in a tub or bucket of water, you'll discourage ants from living in the soil of containerized plants.
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