Jan 11, 2013 - 03:15 PM
The best product for any large area for fire ants is either Award Fire Ant Bait - http://www.epestsupply.com/product/NO...
or Dupont Advion Fire Ant Bait - http://www.epestsupply.com/product/AD...
Both of these products apply at a very low rate and are very affordable. They also work extremely well over the long term.
The main point is to apply when the ants are active, and not when the ground is wet. Usually early morning is best.