OPM Termite Practice Exam

Which method is used to control subterranean termites?

1. Natural barriers

2. Physical removal

3. Chemical barrier between the soil and the structure

4. Biological controls

The correct answer is: Chemical barrier between the soil and the structure

The method of using a chemical barrier between the soil and the structure is effective because it directly targets the subterranean termites' entry points. Subterranean termites primarily live in the soil and can easily gain access to wooden structures through the ground. By creating a chemical barrier, pest control professionals can apply termiticides to the soil around and beneath a building, preventing termites from penetrating the structure. This method not only protects existing structures but can also be part of a preventative strategy in new construction. The effectiveness of chemical barriers stems from their ability to establish a zone that termites will not cross, thereby reducing the likelihood of infestations. This approach is often used in conjunction with other methods to ensure comprehensive protection against these wood-destroying insects. Understanding the behavior and biology of subterranean termites helps justify the selection of this method as a robust means of control.