Locate and confirm the nest (look for sawdust-like debris, hollow-sounding wood, and ant trails)
Eliminate moisture sources (fix leaks, improve ventilation, remove standing water)
Seal entry points and cracks with caulk or appropriate sealant (especially around doors, windows, pipes, and utility lines)
Remove or reduce damaged/rotting wood and dry out affected areas
Use bait stations (place along active trails and near entry points; keep them undisturbed until bait is taken)
Use ant gel/bait formulated for carpenter ants as a targeted alternative to sprays
Apply residual insecticide labeled for carpenter ants to cracks, voids, and entry routes (follow label directions)
Treat wall voids/accessible cavities if you can safely access them; otherwise hire a licensed pest pro
Use dust formulations (e.g., labeled insecticidal dust) in dry voids and wall gaps where ants travel
Avoid relying on surface sprays alone (they may not reach the colony)
Maintain sanitation around the area (reduce accessible food sources, wipe up sugary spills, store food in sealed containers)
Trim vegetation and keep mulch away from siding and wood structures
Remove wood-to-ground contact (stacks, firewood, lumber, or debris near the home)
Monitor with ongoing checks for new trails and fresh frass/sawdust
Re-treat or re-bait as needed until activity stops
Contact a licensed pest control professional for large infestations, inaccessible nests, or structural damage