Why are dry-wood termite colonies difficult to eliminate from structures?

Dry-wood termite colonies are particularly difficult to eliminate from structures because they nest directly within the wood they consume, rather than invading from the soil. Because their entire colony resides inside the structure's wooden components, they lack the soil connections that make other termite species easier to target with traditional perimeter treatments.12

To effectively manage an infestation, it is necessary to address the colony within these internal galleries. The most effective method for elimination is fumigation, which can reach the termites throughout the structure. Alternatively, insecticides can be injected into small holes drilled directly into the infested wood galleries. Preventive measures, such as using chemically treated wood during building construction and sealing wood surfaces with paint or other durable finishes, are essential to deter these pests from establishing colonies.1