Wood Destroying Organism (WDO) Home Inspection Practice Exam

What type of structural wood do termites infest?

1. Wood exposed to elements

2. Recently treated wood

3. Wood in contact with soil

4. Recycled wood

The correct answer is: Wood in contact with soil

Termites are particularly drawn to wood that is in contact with soil, which greatly increases their ability to access and infest this wood source. When wood is in direct contact with the ground, it not only provides a conducive environment for termites to thrive but also allows for moisture retention, a crucial factor for termite activity. They generally prefer wood that has a higher moisture content, which is more common in wood touching the soil or in damp conditions. While wood exposed to the elements might eventually become infested, it often dries out and becomes less appealing to termites due to reduced moisture levels. Recently treated wood is also less likely to be infested since chemical treatments are designed to repel or kill termites. Recycled wood can be a potential target for termites, but like exposed wood, it would also need proper conditions—such as moisture and contact with soil—before it becomes a prime candidate for infestation. Thus, wood in direct soil contact is the most prevalent risk factor for termite infestations.