There are two drywood termite species in Arizona that are considered to be of major economic importance. The most destructive drywood termite species in the state is known as the dark western drywood termite, and the other is the light western drywood termite, which is also known as the southern drywood termite. Drywood termite infestations are difficult to prevent, detect and treat because, unlike subterranean termites that infest homes from the soil, drywood termites infest structures while they swarm. Therefore, drywood termites can start an infestation in any area of a home, including wood located beneath shingles. After drywood termite swarmers (alates) infest external wood sources on a home they often tunnel their way into internal structural woods.
While subterranean termites infest structural wood around a home’s foundation before possibly moving to higher points, drywood termite infestations can occur in areas of a home where infested wood cannot be accessed. There is little a homeowner can do to prevent drywood termite infestations, but using chemically treated and/or pressure treated wood as lumber to build a home can effectively repel drywood termites for a period of time. There exists several ways in which a home is treated for a drywood termite infestation, and while all commonly used methods are effective at eliminating infestations, each method has its pros and cons.
The most popular method of treating drywood termite infestations is full structure fumigation. This method is especially necessary when a pest control professional cannot easily access infested areas of a home, or when an infested home is hosting multiple colonies that may not all be accounted for. The only drawback to fumigation is that it does not prevent future infestations. Another method involves heating a home to 124 degrees for a period of at least 30 minutes. This method is preferred by some, but whole structure heat treatments may damage certain items, but simply removing such items, like vinyl records, will prevent unwanted damage. Researchers are currently exploring biological drywood termite control agents in an effort to develop an optimal form of drywood termite control.
Have you ever needed a fumigation?