Drywood termites are treated using several methods depending on the severity of the infestation. Tenting and fumigation are the most effective for widespread infestations, as they eliminate termites in inaccessible areas. Spot treatments using liquid or foam termiticides can address smaller, localized colonies. Heat treatments raise the temperature in affected areas to lethal levels, while microwave treatments use electromagnetic waves to kill termites. Preventive measures, such as treating wood with borates or installing physical barriers, can also help protect against future infestations.