If a home has wood boring beetles outside, what should be done regarding the crawlspace?

In this scenario, the best course of action is to focus on treating the external wood rather than addressing the crawlspace directly. Wood boring beetles primarily infest areas where they have access to wood, particularly untreated or damaged wood that allows them to enter and lay eggs. By treating the exterior wood, the immediate source of the problem is mitigated, thus preventing further infestation and damage from progressing into the crawlspace.

While applying a vapor barrier can help in controlling moisture levels within the crawlspace and might deter some pests, it does not directly address the existing beetle problem. Inspecting the crawlspace for damage is important, but unless the source of the infestation is handled, that inspection may reveal further problems without resolving the current situation.

Focusing on the external treatment helps to contain the issue at its source, making it less likely that the beetles will migrate into the structure, including the crawlspace. This proactive approach ensures a more comprehensive management of the problem.