The short version
Most termite problems in Orange are western subterranean termites, and the usual fix is a liquid soil treatment or bait stations. Drywood termites need fumigation or wood treatment instead. Start with an inspection; $75–$250 is typical.
- Look for mud tubes, shed wings and hollow-sounding wood.
- Swarms usually show up in spring.
- Drywood termites need wood treatment or fumigation instead.
- An inspection typically costs $75–$250.
- Insurance usually doesn’t cover termite damage.
Homeowners, landlords and anyone buying or selling a house in Orange, whether you've spotted something or just want to know what to watch for.
What to look for
Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs. Termites work quietly. A colony can feed inside a wall for years. Winters around Orange stay mild, with average lows near 47°F, so colonies keep feeding all year.
- 1Sagging or spongy floors near exterior walls.
- 2Termite activity reported at a neighbor's home.
- 3Termite tubes hanging down from ceilings or joists.
- 4Small kick-out holes in exposed wood.
- 5Crumbling baseboards behind furniture.
- 6Mud in cracks of subfloor or joists.
Why it’s worth acting soon
- Colonies grow and spread every year they go untreated.
- Damage hides behind drywall, flooring and trim.
- Homeowners insurance usually doesn’t cover termite damage.
- An active infestation can complicate a home sale.
Treatment options and typical costs
Termite Inspection and WDI Report
$75–$250
The inspector checks the foundation, garage, attic and damp spots. Bring up anything you’ve noticed.
- Time
- 60–120 minutes
- Best for
- Every job, real estate closings, and yearly peace of mind
Fumigation for Drywood Termites
$1,200–$4,000 (often $1–$4 per square foot)
Fumigation does not treat subterranean termites living in the soil. An Orange home with both species may need a soil barrier as well as the tent.
- Time
- 2–3 days including tenting and aeration
- Best for
- Widespread drywood termites throughout a structure
Localized Wood, Foam, and Borate Treatment
$250–$1,500
A local treatment is cheaper than fumigation but only covers what the Orange technician can find. Hidden drywood galleries elsewhere in the house are not touched.
- Time
- 1–3 hours
- Best for
- Small drywood spots, wall voids, and exposed framing
Liquid Soil Termiticide Barrier
$1,200–$3,500 (often $3–$16 per linear foot)
This is the workhorse treatment for subterranean termites in Orange. Applicators trench, drill through slabs where needed, and saturate the soil.
- Time
- Half a day to a full day
- Best for
- Active subterranean termites; fast knockdown around the foundation
Prices are typical published ranges. Ask what’s included before you compare quotes.
In a basement, the wooden sill plate on top of the block wall is the first piece of wood termites reach.Which termites live around Orange.
Drywood termites are common around Orange as well, flying straight into attic framing, eaves and furniture without any soil contact. Look for tiny piles of pellets that look like coarse sand. The termite you're most likely to meet in Orange is the western subterranean termite. It nests in soil and builds mud tubes to reach wood. It needs steady moisture.
Local termites conditions in Orange.
Knowing Orange's seasonal timing lets you schedule treatment before the busy stretch rather than after it, which usually means faster service and a more accurate quote. A provider who works Orange and California every day can point out the specific conditions that matter most here, and getting the scope, price, and follow-up terms in writing makes it easier to compare options. Orange sits in a local climate, and that sets the pace for termite activity here: the warmer months. In Orange, the area is mostly residential, so termites pressure can differ from one block to the next depending on how tight the entry points are and how much food, water, or shelter is close by. An inspection in Orange usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first.
A downspout that dumps water at the foundation keeps the soil wet year-round. Extend it well away from the house.When termites swarm here.
Swarm season is when termites show themselves. In Orange, western subterranean termites usually swarm in spring, and again in fall after the first good rain. Drywood termites around Orange tend to swarm in late summer and fall. A swarm outside means a colony is nearby. A swarm inside usually means it's in the house. Save a few in a bag, or snap a clear photo.
Where to look around your house.
Many homes in Orange sit on concrete slabs, so termites come up through expansion joints, plumbing gaps and settlement cracks. Check the garage edges and behind baseboards. Look where pipes come through the floor. Outside, watch for mud tubes behind shrubs. Keep soil and mulch below the slab edge. The same advice applies across the area, from Orange out to Santa Ana and Anaheim.
A year of termites in Orange.
- Summer: with highs around 84°F in Orange, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Fall: with about 14 inches of rain a year in Orange, make sure gutters and downspouts carry water well away from the foundation. - Winter: a good time to book an inspection in Orange, before swarm season starts. - Spring and fall: swarm seasons. In Orange, swarms often follow the first warm days and the first fall rain.
What happens at an inspection.
On a slab, they focus on joints, cracks and pipe gaps. A moisture meter and a probe help them find hidden activity. Afterward, ask them to show you what they found. Photos help. Most inspections take an hour or two. The inspector walks the outside of the house first. They check the foundation, the soil line and nearby wood. Inside, they check the garage, baseboards, plumbing gaps and the attic.
Termites or ants?
- Antennae: termite antennae are straight. Ant antennae bend like an elbow. - Debris: termites leave mud. Carpenter ants leave sawdust. - Tunnels: termite galleries are packed with mud. Ant tunnels are clean and smooth. - Wings: termite wings are all the same length. Ant wings aren’t. - Waist: termites are thick through the middle. Ants are pinched.
Getting ready for treatment day.
Clear a path along the outside walls. Move stored boxes away from garage walls. Mark sprinkler heads and any buried lines. Keep pets and kids inside while the crew works outside. Ask how long to stay off treated soil. Any drill holes in a slab or patio get patched. Soil treatments and bait stations need little prep.
Mulch and termites.
Wood chips right against siding hold moisture termites like. Keep mulch thin and pull it back from the foundation. A dry strip along the house lets you spot mud tubes.
Questions to ask before you sign.
- Is the whole foundation treated, or just one spot? - What does the warranty cover, and for how long? - What does the yearly renewal cost? - What do I need to do before and after treatment? - Which termites did you find, and where? - What product or system will you use?
What affects the price
- Warranty type: retreatment only or damage repair.
- Wells, drains, or water features limiting chemical use.
- Time of year and how booked up local companies are.
- Extent of existing damage needing repair.
- Cubic footage under the tent for fumigation.
- Attached garages, decks, and additions.
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What's your biggest concern about termites?
When to call for help
Termites leave mud. Carpenter ants leave clean tunnels and sawdust. It's also the cheapest termite service. Lenders often ask for one. Get a wood-destroying insect (WDI) report either way. Buying or selling? Hollow-sounding wood is another clue. Call if you see mud tubes, pellets or an indoor swarm.
What you can do yourself
Treating an active colony is harder. The product has to reach the whole colony. It also needs even coverage around the entire foundation. Store-bought sprays usually kill only the termites you see. Some of the work is yours. Pull mulch back from the foundation. Fix leaks and clear gutters. Keep firewood away from the house.
Termites in Orange
Termite activity in California is above average. Most houses will see termites at some point. Like nearby Santa Ana, Orange gets about 14 inches of rain a year, so termites gather wherever extra water collects, like sprinkler zones, hose bibs and AC drain lines.
Local research
Termites in Orange, CA: what the public record shows
Before you compare quotes, it helps to know which termites actually live in California, when they are busiest around Orange, and what the state figures look like. Everything below links to the agency or university page it came from.
Termite control products for drywood termites
Drywood and subterranean termite work in California is effectively professional-only; the state licenses it by branch.
UC Statewide IPM ProgramTermite species recorded in California
- Formosan subterranean termite (Coptotermes formosanus) — FDACS lists it in Florida, Alabama, Georgia, Louisiana, Mississippi, South Carolina, North Carolina, Tennessee, Virginia, Texas, Arizona, California and Hawaii. Colonies contain…
- Western drywood termite (Incisitermes minor) — UC IPM: 'California's second most important termite pest', 'commonly found along the Pacific coastal region extending into the Central Valley and deserts of Southern California'…
- Desert subterranean termite (Heterotermes aureus) — UA Extension calls it an 'important structural pest' of the desert Southwest. UC IPM: 'flies in the late afternoon or early evening in July, August, and September'.
- Western subterranean termite (Reticulitermes hesperus) — Oregon State: causes damage to structures in the Pacific Northwest and 'may swarm any time of year'. Utah State describes swarmers 3/8 inch long and workers 1/4–3/8 inch, pale c…
When termites are busiest around Orange
Reticulitermes swarm in the afternoon in spring or fall on clear days after a soaking rain; drywood swarmers fly in daytime during summer and fall; Heterotermes aureus flies late afternoon/early evening in July–September (UC IPM).
UC IPM: Reticulitermes 'can be encountered in nearly all regions of the state'; the western drywood termite is 'California's second most important termite pest', found along the Pacific coast, Central Valley and Southern California deserts. FDACS lists California among states with Formosan termites. Branch 3 covers 'the control of wood-destroying pests or organisms by the use of insecticides or structural repairs and corrections'; Branch 1 covers fumigation.
Rules that apply in California
Sources: Drywood Termites (Pest Notes); University of Georgia Extension; University of Missouri Extension; Formosan Termite Program; Not All Termites Are Terrible (Home and School IPM Newsletter); Termites | Solve Pest Problems. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Set deck and porch posts on concrete, not soil.
- Seal cracks in the foundation and slab.
- Store firewood well away from the house, off the ground.
- Keep six inches between soil and siding or wood.
- Keep the termite renewal contract current after treatment.
A damp cabinet under a leaky sink is worth reporting to your landlord early. Fixing the leak removes what draws termites in.Did you know?
In Orange, termites are closer cousins to cockroaches than to ants, despite the old nickname white ants.
Some African termite mounds stand more than 25 feet tall.
Questions people ask
What does a WDI report include?
It does not open walls. Hidden damage in an Orange home can still surface later, which the report states. The report is a snapshot of what a licensed inspector could see at an Orange, California property on that day. It covers the foundation, crawl space, garage, attic, and exterior.
Will termites come back after treatment?
Widely published figures put liquid barriers at five years or more. Yearly monitoring is cheap insurance for an Orange home compared with a second full treatment. A good treatment in Orange keeps termites out for years, not forever.
Can termites damage a house on a concrete slab?
With no crawl space to inspect, the first sign in an Orange home may be damaged trim or a swarm indoors. Bait stations around an Orange slab home are a popular option because they avoid extensive drilling through floors. Slab construction in Orange hides termite entry very well.
Does fumigation kill subterranean termites too?
Subterranean termites need a soil barrier or bait system. An Orange inspector who finds both species will recommend both treatments. No. Fumigation kills every termite inside the tented Orange home, but subterranean colonies live in the soil and simply come back.
Do I have to leave my house during termite treatment?
Fumigation is the exception. An Orange fumigator will give you a checklist for bagging food and vacating. Most termite work in Orange, California is done with you at home. Follow the applicator's instructions about foam-treated rooms or freshly drilled areas.
Are termites common in California?
Around Orange, the usual culprit is the western subterranean termite.
Sources (4)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Termite Exterminator · Updated September 11, 2026 · How we write these guides