Last Updated: June 2026 | Reviewed by The PCC Research Team
Visual evidence of California’s primary wood-destroying pests. On the left, a cluster of young and adult Drywood termites mixed with their distinct pellet droppings. (Left, San Jose) & On the right, a winged Subterranean swarmer looking to start a new colony (Right, Sacramento)
Termites (Isoptera) are the single most destructive structural pest in California. Unlike ants or roaches that simply contaminate your food, termites actively consume the cellulose inside the equity of your home, causing billions of dollars in structural damage statewide every year.
Navigating the world of termite control can be overwhelming. Prices vary wildly, treatment methods range from orange oil to deadly Vikane gas, and real estate escrow laws add another layer of complexity. Use the master directory below to diagnose your specific species, prepare for treatments, and understand your financial options.
Identification & Inspection
Treatment Methods
Fumigation Logistics
Damage & Legal
Termite Species Guides
The Two Main Threats: Drywood vs. Subterranean
The biggest mistake homeowners make is assuming all termites are the same. In California, treatment methods and pricing are entirely dictated by the species of termite attacking your home.
| Feature | Drywood Termites | Subterranean Termites |
|---|---|---|
| Where They Live | Deep inside dry structural framing (attics, roof eaves, siding). They do not need contact with the soil. | Underground in massive colonies. They travel up into the house through the foundation. |
| Visual Evidence | Piles of hard, 6-sided fecal pellets (called Frass) that look like sand or coffee grounds. | Brown, dirt-like Mud Tubes running up foundation walls or dangling from ceilings. |
| Eradication Method | Whole-house Tenting (Fumigation) or localized Orange Oil spot injections. | Exterior soil trenching (liquid barrier) or in-ground Baiting Stations (Sentricon). |
A massive, expensive mistake homeowners make is paying $3,000 to tent their house, only to have the termites return a week later. Tenting (Vikane gas) only kills bugs above the ground. If you have Subterranean termites living in the dirt beneath your foundation, the gas will never reach them. You must accurately identify the species before signing a contract.
The Spring Panic: “Swarmers”
Every spring and fall, especially after a heavy rain followed by a warm day, mature termite colonies release hundreds of winged reproductives called “Swarmers” (Alates). Their only goal is to fly out, drop their wings, mate, and start a new colony.
- If you see them OUTSIDE: It means there is a mature colony nearby (perhaps in a neighbor’s tree or a stump in your yard). It is a warning to get a preventative inspection.
- If you see them INSIDE: If you find dozens of discarded wings on your window sills or swarms of bugs flying around your living room lights, you already have a severe, mature infestation inside your walls. You need professional treatment immediately.
The California Real Estate Inspection (WDO Report)
If you are buying or selling property in California, a standard home inspection is not enough. Most lenders will require a specific Wood Destroying Organisms (WDO) report from a licensed structural pest control operator. This report categorizes damage into two critical sections:
- Section 1 (Active): Details areas of active termite infestation or active wood rot/fungus. Lenders require Section 1 items to be treated and the wood repaired before the loan will fund.
- Section 2 (Conditions): Details conditions likely to lead to an infestation in the future (e.g., a plumbing leak or soil touching wood siding). These are preventative recommendations.
Damage, Legal & Financial Resources
Termite damage often leads to disputes between homeowners, landlords, and insurance companies. Understand your rights before paying out of pocket. Use the directory above to review why homeowners insurance usually denies claims, how to handle broken Spanish clay roof tiles, and the legal rent proration guidelines (AB 551) if you are forced to relocate to a hotel during a mandatory fumigation.
Frequently Asked Questions
Q: What bug can be mistaken for termites?
A: Flying ants are the most common insects mistaken for termites. You can tell them apart by looking at the waist and antennae. Ants have pinched waists and bent antennae, while termites have thick waists and straight antennae.
Q: How do I get rid of termites in my house permanently?
A: It depends entirely on the species. Drywood termites generally require whole-house tent fumigation to ensure total eradication. Subterranean termites cannot be tented; they require professional soil trenching with liquid termiticides or in-ground baiting systems.
Q: What is the biggest enemy of termites?
A: Ants are the natural biological enemies of termites, particularly Carpenter Ants and Fire Ants, which frequently raid termite colonies for food. However, professional chemical barriers remain their biggest threat in residential areas.
Q: Is termite harmful to humans?
A: Termites are not directly harmful to humans. They do not bite people, they do not sting, and they do not carry diseases. Their threat is entirely structural and financial, as they hollow out the wooden framework of your home.
Q: What does it mean when you find termites with wings in the house?
A: Termites with wings are called “swarmers” (alates). Finding them inside your house means that a mature termite colony has been living inside your walls for several years and is now releasing reproductives to start new colonies. You need an inspection immediately.