Amdro Fire Ant Yard Treatment Bait is our top choice for yard treatment. In addition to killing visible and hidden fire ant mounds, this treatment powder kills the queen and the entire colony. The treatment also serves to prevent new mounds from forming--one application kills fire ants for the entire season.
The product can easily be applied across an entire yard and can kill both bigheaded and harvester ants. The 5 lb. bag can treat 5,000-10,000 sq. ft. of yard depending on the level of infestation.