This is a wood treatment, often used in the preventative stages, but many believe it also helps curb current population growth. During heat treatments, nylon tarps are used to tent the infested wood and their pests. Propane heat is then connected to the tent and blown into the structure, heating the exterior and interior walls to 120-degrees F for up to one hour. This treatment works well for large infestations. When only small areas have been infested by termites, a freezing process is used.
Liquid nitrogen is pushed into afflicted structures, freezing walls and termites in their tracks.
This process is used on very selective areas and is most effective at the beginning stages of growth. By means of high voltage electrical shocks, termites can be destroyed instantly, wherever their location. Electro-guns must be used in the direct vicinity of termite colonies, but are effective in treating large populations of termites which are confined to a relatively small area. Small areas, such as windows, doors, and short walls can be treated with microwave rays. Small microwave looking devices shoot rays through walls and kill termites within 2-3 days.