Drywood Termites

What are drywood termites and why are they a problem in San Diego?

Drywood termites are wood-destroying insects that live inside dry wood, including framing, furniture, and decorative trim. Unlike subterranean termites, they don’t need soil to survive, which makes them especially difficult to detect. In San Diego’s warm, dry climate, these pests thrive and can cause serious structural damage over time if left untreated.

What do drywood termites look like?

Adult drywood termites range from light brown to dark brown and measure about ⅜ to 1 inch long. Winged swarmers, often the first sign of an infestation, have long, transparent or smoky-gray wings that extend well past their bodies.

How are drywood termites different from subterranean termites?

Drywood termites do not require contact with soil or moisture and can live entirely within dry, structural wood, while subterranean termites nest in the soil and need more moisture.

How can I tell if I have drywood termites in my home?

Look for these warning signs:

• Frass (wood-colored pellets) near baseboards or windowsills
• Tiny kick-out holes in wood
• Discarded wings after swarming (often in late summer and early fall)
• Hollow-sounding or blistered wood

What attracts drywood termites to homes and structures?

Exposed, untreated wood, cracks or gaps in exterior wood, and warm, dry weather typical of San Diego can all attract drywood termite activity.

Where am I most likely to find drywood termites in my house?

Common hiding spots include:

• Attic rafters and beams
• Wooden window and door frames
• Baseboards and floorboards
• Antique or upholstered furniture
• Decks and patios with exposed wood

How fast can drywood termites damage property?

Drywood termites are generally less aggressive than some other termite species. They tend to eat through wood more slowly and usually form smaller colonies, meaning the damage takes longer to show up.

Even a slow infestation can lead to serious issues over time. If the damage occurs in the wrong place—like around your home’s foundation or support beams—it can weaken the structure and lead to costly repairs. So, if you spot signs of drywood termites, it’s best to take action sooner rather than later.

Can I treat drywood termites myself, or do I need a professional?

Drywood termites live inside the wood they infest, which makes them much harder to reach with DIY treatments. Over-the-counter sprays or foams only work on visible areas and rarely penetrate deep enough to eliminate entire colonies. Professional pest control ensures proper identification, appropriate treatment, and long-term prevention.

What drywood termite treatments are available in San Diego?

Treatment options typically include spot treatments for smaller infestations, whole-home fumigation for more widespread problems, and preventive wood treatments to keep termites from returning. For the best results, give Harbor Pest Control a call. We’ve been helping San Diego homeowners protect their properties from drywood termites since 1948.

Do I have to leave my home for termite fumigation?

Yes. Whole-structure fumigation requires residents (and pets) to vacate the property temporarily for safety.

How can I prevent drywood termite infestations?

Seal up cracks in exterior wood, keep exposed wood painted or sealed, and get rid of any infested items as soon as possible. It’s also a good idea to schedule regular termite inspections with a local pro so you can catch any problems early.