The short version
Most termite problems in San Bernardino are desert subterranean termites, and the usual fix is a liquid soil treatment or bait stations, placed where the soil stays damp. 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 from July through September.
- Drywood termites need wood treatment or fumigation instead.
- An inspection typically costs $75–$250.
- Insurance usually doesn’t cover termite damage.
Anyone in San Bernardino who owns, rents out, or is buying a home and wants to know whether termites are a real concern.
What to look for
Termites work quietly. A colony can feed inside a wall for years. Winters around San Bernardino stay mild, with average lows near 42°F, so colonies keep feeding all year. Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs.
- 1Doors and windows that suddenly stick.
- 2Mud tubes running up foundation walls or piers.
- 3Termite tubes hanging down from ceilings or joists.
- 4Blistered or bubbling paint on wood surfaces.
- 5Small kick-out holes in exposed wood.
- 6Piles of identical shed wings on windowsills.
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
Annual Renewal and Monitoring
$150–$400 per year
Renewal fees are small next to a second full treatment. For San Bernardino homeowners, the visit usually includes a walk-around, a crawl space check, and a bait station service.
- Time
- 30–60 minutes per visit
- Best for
- Keeping a treated home protected after the initial job
Fumigation for Drywood Termites
$1,200–$4,000 (often $1–$4 per square foot)
Fumigation does not treat subterranean termites living in the soil. A San Bernardino 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 San Bernardino 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
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 San Bernardino.
It nests in soil and builds mud tubes to reach wood. It needs steady moisture. Drywood termites are common around San Bernardino 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. In San Bernardino's dry heat, desert subterranean termites can build tubes that hang free from ceilings. They'll eat fences, door frames, anything wooden. The termite you're most likely to meet in San Bernardino is the desert subterranean termite.
Local termites conditions in San Bernardino.
Across San Bernardino, the area is mostly urban, 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 San Bernardino usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing San Bernardino'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 San Bernardino 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. San Bernardino sits in a semi-arid climate, and that sets the pace for termite activity here: spring swarm season (March-May), warmer earlier in the south.
Mulch piled against the house and a dripping hose bib give termites moisture and cover. Pull mulch back and fix the drip.When termites swarm here.
Across San Bernardino, desert subterranean termites usually swarm from July through September, around dusk after monsoon storms. Drywood termites around San Bernardino 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. Swarm season is when termites show themselves.
Where to look around your house.
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 San Bernardino out to Fontana and Moreno Valley. Many homes in San Bernardino sit on concrete slabs, so termites come up through expansion joints, plumbing gaps and settlement cracks.
A year of termites in San Bernardino.
- Summer: swarm season in San Bernardino, usually after monsoon storms. Watch porch lights at dusk. - Winter: a good time to book an inspection in San Bernardino, before swarm season starts. - Fall: with about 16 inches of rain a year in San Bernardino, make sure gutters and downspouts carry water well away from the foundation. - Summer: with highs around 96°F in San Bernardino, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
What happens at an inspection.
Afterward, ask them to show you what they found. A moisture meter and a probe help them find hidden activity. On a slab, they focus on joints, cracks and pipe gaps. Inside, they check the garage, baseboards, plumbing gaps and the attic. They check the foundation, the soil line and nearby wood. The inspector walks the outside of the house first. Most inspections take an hour or two. Photos help.
Termites or ants?
- 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. - Antennae: termite antennae are straight. Ant antennae bend like an elbow. - Debris: termites leave mud. Carpenter ants leave sawdust.
Getting ready for treatment day.
Keep kids and pets inside while the San Bernardino crew applies the product, and ask how long to stay off treated soil. In California, 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). Flag sprinkler heads and buried lines. Move boxes away from garage walls. Clear a walking path along the exterior walls. Prep is light for liquid treatments and bait stations. Drill holes in slabs or patios get patched afterward.
Mulch and termites.
A dry gap along the house makes mud tubes easier to spot; in San Bernardino's dry climate the risk is irrigation and leaky hose bibs rather than rain. Pull mulch back from the foundation and keep the layer thin. Wood chips touching the siding trap the moisture termites are after.
Questions to ask before you sign.
- What do I need to do before and after treatment? - Which termites did you find, and where? - What product or system will you use? - 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 affects the price
- Liquid barrier versus bait station system.
- Linear feet of foundation to be treated.
- Wells, drains, or water features limiting chemical use.
- Local labor rates and licensing requirements.
- Extent of existing damage needing repair.
- Access to crawl spaces and attics.
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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
Store-bought sprays usually kill only the termites you see. It also needs even coverage around the entire foundation. The product has to reach the whole colony. Treating an active colony is harder. Keep firewood away from the house. Fix leaks and clear gutters. Pull mulch back from the foundation. Some of the work is yours.
Termites in San Bernardino
A typical home in San Bernardino is worth around $420k, which puts a few hundred dollars for an inspection and prevention in perspective. With summer highs around 96°F, San Bernardino's semi-arid climate decides when local termites are busiest. Most houses will see termites at some point. Termite activity in California is above average. San Bernardino only sees about 16 inches of rain a year, so local termites gather wherever water collects, like sprinkler zones, hose bibs and AC drain lines.
Local research
Termites in San Bernardino, 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 San Bernardino, 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 San Bernardino
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
- Store firewood well away from the house, off the ground.
- Set deck and porch posts on concrete, not soil.
- Seal cracks in the foundation and slab.
- Keep the termite renewal contract current after treatment.
- Fix leaking hose bibs, faucets, and pipes promptly.
Compare quotes line by line: the areas treated, the product, the warranty and the renewal fee. The lowest total isn't always the best deal.Did you know?
Across San Bernardino, soldier termites can't feed themselves, so the workers feed them mouth to mouth.
Questions people ask
How long does termite treatment take?
Fumigation takes two to three days. Bait stations take a few hours to install. A liquid barrier takes half a day to a day.
How do I know if I have termites or flying ants?
Save one in a bag for the inspector. Ants have a pinched waist; termites don't. Termite wings are all the same length. Check the wings and the waist.
Can I treat termites myself?
Store-bought sprays usually kill only what you see. It also needs even coverage around the foundation. The product must reach the whole colony. An active colony is harder. Prevention, yes.
Does fumigation kill subterranean termites too?
It doesn't reach a colony living in the soil. Tenting clears termites inside the house. Not reliably.
How do I choose a termite company?
Compare the proposals, not just the totals. Ask what the warranty covers. Ask which termites they found and what product they'll use. Make sure they're licensed in California.
What are the signs of termites that homeowners miss?
Across San Bernardino, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. Across San Bernardino, a professional inspection looks for mud tubes, damaged wood, and swarming activity, and treatment targets the soil and the colony rather than just the visible wood.
Are termites common in California?
Around San Bernardino, the usual culprit is the desert subterranean termite.
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Sources (11)
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