What moisture content percentage do carpenter ants prefer?

Carpenter ants prefer wood with a moisture content around 15%. This level of moisture is conducive to their nesting habits, as it is low enough to prevent decay but still retains moisture needed for their development. Carpenter ants are particularly attracted to wood that is damp or has a higher moisture content than the surrounding environment, often due to water damage or leaks.

Moisture content above 20% can lead to decay, which is not ideal for carpenter ants, as they typically colonize wood that is structurally sound. Therefore, while some moisture is beneficial for their nests, too much can deter their activity. This preference for approximately 15% moisture helps them maintain a stable environment for their colonies, promoting growth and reproduction. Understanding this specific moisture requirement can aid pest control professionals in identifying potential carpenter ant infestations in homes or structures.