This is Zolgar's advice*:

Go to Wal Mart.
Buy a can of Coleman Camp Fuel (AKA White Gas)
put a funnel in the ant hill.
Pour gas down hill.
Light it on fire.
Run away.

WD-40 and a Zippo works to get rid of the ants still running around.

*that you should probably ignore because Zolgar is a pyro and tends to like burning things.