Detecting Formosan Termites
Early detection leads to early treatment, which is critical. Entomologists at the University of Hawaii have found that a colony of Formosan termites can do significant structural damage in as little as six months.
If you live in or near affected areas, inspect your home and property at least once a year for the following signs:
- Shelter Tubes: Formosan termites don’t like to be exposed, so they build shelter tubes to travel between their nest and sources of food and water. Check the foundation, as well as any wood near the ground, for signs of tubes.
- Water Source: Examine areas surrounding outside faucets and water lines. Inside, inspect areas where moisture is found, such as kitchens, bathrooms, and laundry rooms.
- Damage: Look for pinholes in drywall and evidence of damage to wood in any location, even the tack strips under carpeting.
- Nests: Formosan termites build large nests made of a rock-like mass. Most of these nests are built below ground, but not all nests have contact with soil. Probe any suspect areas with an awl or screwdriver, and check any wood that feels soft or hollow. Look for bulges or depressions, discolorations, and spongy wood. Check cracks in stucco or plaster, and knots in trees.
Should you discover an active colony of termites, gather several different-looking specimens from the nest, since some members of the colony are easier to identify than others.
Another approach is to collect them when they swarm, which takes place at night from April through July. Like most insects, Formosan termites are attracted to light.
To collect samples for identification, mix a little dishwashing soap in a container of water. Place it near a light source, and turn off all other lights in the area.
Put any suspect insects you find in small bottles filled with rubbing alcohol and take them to a trusted exterminator, county extension office, or university entomology department for identification.
Exterminating These Pests
If the samples you collect are identified as Formosan termites, it’s time to call an exterminator, since eradication is best left to professionals.
Before selecting a pest control company, get at least three bids and make sure the exterminator you choose has plenty of experience in dealing with Formosan termites.
There are two basic types of control available: soil termiticides and bait. A reliable exterminator should consult you and discuss all the options before making a decision about treatment.
- The Formosan Termite A Formidable Foe! (USDA)
- Formosan Subterranean Termites (LSU Agricultural Center)