May 16, 2013 - 12:20 PM
Now that you understand the consequences, the best thing to do is to use Bifenthrin, and mix it in large 5 gallon bucket with a small drip hole (very small drill and drill a hole about 1/16th inch) in the bottom of the bucket. Just make this hole on the side rim facing downward. You may need a truck or a tractor to haul everything to get to the mound.
Basically, mix the Bifen Insecticide at a rate of 1 oz per gallon of water and sit the drip hole of the bucket over the mound entrance. This will allow the Bifen to "drip" into the hole at a slow enough rate to hopefully drain down into the nest without puddling up and running off.
I would recommend that you do this exact procedure for every mound, and preferably have several drip buckets going simultaneously for colonies that are close to each other.
This should certainly kill the ants within the colonies that are getting "drip bucketed", however, it is possible that the harvester ants could have interconnected pathways underground in which they can escape. So if the ants show up somewhere else, repeat the procedure.
Hopefully, this works and the ant gods won't disturb you. Good Luck!