Wood Destroying Organism (WDO) Home Inspection Practice Exam

One of the most practical measures for preventing wood-destroying organism infestation is the use of kiln- or air-dried wood. This method is effective because drying wood significantly reduces its moisture content, making it less attractive to wood-destroying organisms like termites and fungal decay. These pests thrive in environments with higher moisture levels, so utilizing wood that has been properly dried helps to mitigate the risk of infestation.

The process of kiln drying involves controlled heating to remove moisture, which not only decreases the weight of the wood but also sterilizes it to an extent, further limiting the chances of pest activity. Likewise, air-dried wood undergoes natural drying processes but is still less susceptible to infestation compared to freshly cut, high-moisture lumber.

Other measures, although helpful, focus more on treatment and monitoring rather than the inherent properties of the materials themselves. Using treated wood provides protection, while applying sealants can prevent moisture entry. Regular pest inspections are essential for early detection but do not prevent infestation on their own. Therefore, using kiln- or air-dried wood represents a proactive approach to preventing infestations before they even occur.