Wood Destroying Organism (WDO) Home Inspection Practice Exam

What type of termite is known for causing the most damage to structures?

1. Drywood termites

2. Subterranean termites

3. Dampwood termites

4. Formosan termites

The correct answer is: Subterranean termites

Subterranean termites are known for causing the most damage to structures primarily due to their behavior and nesting habits. They live in colonies underground and can easily access the wooden components of a structure, making them a prevalent threat to homes and buildings. Their ability to construct mud tubes facilitates travel from their subterranean nests to food sources above ground, allowing them to consume wood and other cellulose materials extensively. This approach not only allows for rapid colony growth but also means that significant damage can occur before infestations are detected, as much of their activity happens within structures, hidden from view. While drywood, dampwood, and Formosan termites also cause damage, their impact tends to be less extensive or is limited to specific conditions. For instance, drywood termites typically infest wood that is above ground and in dry environments, dampwood termites are usually found in decaying wood that is moist, and Formosan termites, while aggressive and destructive, are a subset of subterranean termites and operate similarly to them. However, it is the widespread prevalence and ability of subterranean termites to access and infiltrate structures that primarily distinguishes them as the most damaging type of termite.