What is a common application method for treating indoor ant nests?

Dusting cracks and crevices with a powder is a common and effective method for treating indoor ant nests. This approach allows for targeted application of insecticide in areas where ants are likely to travel or hide, such as behind baseboards, in wall voids, and around potential entry points. The powder adheres to the ants' bodies as they pass through these areas, providing contact with the insecticide and helping to eliminate the colony more effectively.

Additionally, this method minimizes the risk of aerosolizing chemicals into the air, which can be a concern with sprays, and it helps to limit exposure to non-target species and humans. By treating the specific areas where ants are most active, powder applications can be both effective in controlling the infestation and less invasive compared to other methods.

Using bait traps near the nest could also be effective, but dusting provides a broader coverage in hidden areas where nests may exist. While sprays around the house can be useful in preventing new infestations, they may not directly target the nest itself as effectively as dusting. Spraying the floor directly may not reach the nest and can create unnecessary chemical exposure in areas that do not need treatment.