In order to fight California termites, you need to find out a little more about the types of termites that are present in the Golden State. Subterranean and drywood termites are the most common termite types in California. Subterranean termites usually live in soil, and drywood termites typically live in dry wood, such as decks and lumber. Drywood species are more widespread in Southern California.
To get more specific, subterranean termites of the genus Reticulitermes are highly active in California, and so are desert subterranean termites in the Sonoran Desert. Subterranean termites generally swarm when temperatures start to increase and after rain. They are not as active during cooler temperatures. If you live in San Diego, be wary of the Formosan subterranean termite. These termites can create large colonies and inflict damage within a short period of time.
Subterranean termites
Subterranean termites are among the most destructive pests in California. They live underground and travel through mud tubes to reach food sources above the surface, usually wood in buildings and homes. Because they stay out of sight, they can cause damage before you realize there’s a problem.
Subterranean termites have different roles within a colony. Workers are pale and soft-bodied, while soldiers have larger heads with strong jaws to protect the nest. The reproductive termites, called swarmers, are dark brown or black with two pairs of wings. These wings are the same size and are often shed near windowsills or entryways.
One of the most common signs of their activity is the presence of thin, muddy tubes. These often run along walls, foundations, or inside crawl spaces. You may also notice wood that sounds hollow when tapped, floors that sag, or paint that bubbles or peels for no clear reason.
To help prevent subterranean termites from becoming a problem, you need to make your home less welcoming. Start by reducing moisture around the foundation: fix leaking pipes, clean out gutters, and make sure water drains away from your home. It also helps to store firewood and mulch away from your walls, and avoid letting soil touch wooden siding or porch posts.
Scheduling routine termite inspections can help identify activity before it becomes severe. Our professionals can spot the signs of termites and help create a treatment plan if termites are found.
Drywood termites
Drywood termites are another common species in California, especially in warmer coastal and southern parts of the state. Unlike subterranean termites, they don’t need contact with soil or moisture from the ground. That means they can live entirely inside wood, whether it's furniture, floors, or the frame of your house.
These termites are slightly larger than their underground relatives. Winged swarmers are often light brown with long, clear wings. They tend to appear in late summer or fall, especially after a heatwave or humid weather. Finding discarded wings indoors on windowsills or near doors is one of the first signs they might be present.
Because drywood termites live inside the wood, they don’t build mud tubes. Instead, they leave behind piles of dry droppings, called frass, that look like small grains of sand or sawdust. You might find these beneath damaged furniture or near wall cracks.
Since these termites hide deep inside wood, they’re hard to reach with store-bought sprays or surface treatments. Professional termite control is needed to treat the infestation and prevent it from spreading.