People who buy insecticides for fire ant control often have two objectives. They want to eliminate the ants immediately. They also hope the ants will not come back. It is almost impossible to accomplish both objectives with only one treatment. Most people find that they get better results by combining several different treatment methods.
Liquid mound treatment will kill many ants, but probably will not kill every ant in the nest. Besides, there can be hundreds of colonies of fire ants in an acre of land. Some of the colonies will not have mounds, so most homeowners will miss those colonies when they treat. .
Experts suggest using the liquid mound treatment on mounds that pose an immediate threat to people or pets. The ants that survive the treatment will re-locate the nest to another site. Follow the label directions for mixing and applying insecticide. Do not allow the ants to attack while performing the treatment.
Bait applications are too slow for many people. Experts suggest combining the bait treatment with the liquid mound treatment. Apply bait to the entire yard to control all of the colonies, even the ones that have not built mounds. Bait that contains insect growth regulator (IGR) will have a long lasting effect.
Treat large yards in sections. Bait labels have directions for the amount of bait to use for a thousand square feet. Multiply length times width to find the square feet. Some brands of ant bait can be ruined if they get wet, so watch the weather. Fire ants forage for food in the grass. So apply the bait in the grass away from the mound.
Perimeter applications of liquid insecticide can help prevent the ants from nesting next to the foundation and coming inside the house. Apply liquid insecticide to the foundation and to a band of soil beside the foundation. Follow insecticide label directions for mixing and application.
The bad news is that the treatments will have to be re-applied periodically. Rain and sunshine cause insecticide to break down. New colonies of fire ants will try to move in from the neighbor’s yard, so they will need a new bait treatment. The insecticide labels will have directions for when and how to re-apply the treatments.