What is the most effective way to treat a Harvester Ant infestation?

Injecting into mounds with dust or bait is the most effective way to treat a Harvester Ant infestation because this method targets the ants where they live and work. Harvester ants build intricate mound systems underground, and directly applying a pesticide dust or bait to these mounds allows for the most effective delivery of the treatment.

Pesticide dust can penetrate the nest and eliminate the queen and other ants within the colony, while baiting attracts foraging workers that take the bait back to the colony. This not only helps in reducing the population quickly but can also help in eradicating the entire colony over time, preventing further infestations.

Other methods such as spraying liquid pesticide around the home may not reach the underground colonies effectively and may only provide a superficial solution. Similarly, setting up traps in the kitchen will not address the main source of the infestation, and using natural repellents often lacks effectiveness against established colonies. Thus, direct treatment of the mounds ensures that the core of the problem is being targeted for the best chance of complete elimination of the infestation.