The short version
Most termite problems in Fontana 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.
Homeowners, landlords and anyone buying or selling a house in Fontana, 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 Fontana stay mild, with average lows near 43°F, so colonies keep feeding all year.
- 1Doors and windows that suddenly stick.
- 2Blistered or bubbling paint on wood surfaces.
- 3Crumbling baseboards behind furniture.
- 4Live pale insects inside a broken mud tube.
- 5Dry hexagonal pellets under window frames or eaves.
- 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
Annual Renewal and Monitoring
$150–$400 per year
Bait systems require monitoring to keep working. A Fontana pro checks each station, replaces consumed bait, and notes any new activity around the house.
- 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)
Some companies in Fontana offer heat treatment as a tent-free option for small drywood termite spots. Whole-structure fumigation remains the standard when galleries are spread throughout.
- Time
- 2–3 days including tenting and aeration
- Best for
- Widespread drywood termites throughout a structure
Bait Station System with Monitoring
$1,500–$3,500 install, plus $300–$500 per year
Baiting is slower than a liquid barrier but reaches deeper colonies. For a Fontana home on a well or with a finished slab, it is often the cleaner option.
- Time
- 2–4 hours to install; checked quarterly
- Best for
- Colony elimination, wells and slabs, homes near water
Prices are typical published ranges. Ask what’s included before you compare quotes.
Cardboard boxes stacked on a garage slab are termite food sitting right on their doorstep. Keep storage on shelves.Which termites live around Fontana.
They'll eat fences, door frames, anything wooden. The termite you're most likely to meet in Fontana is the desert subterranean termite. It nests in soil and builds mud tubes to reach wood. It needs steady moisture. Drywood termites are common around Fontana 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 Fontana's dry heat, desert subterranean termites can build tubes that hang free from ceilings.
Local termites conditions in Fontana.
A provider who works Fontana 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. Fontana sits in a local climate, and that sets the pace for termite activity here: the warmer months. Across Fontana, 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 Fontana usually starts outside and works inward, checking the foundation, gaps around doors and windows, and any moisture or clutter near the structure first. Knowing Fontana'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.
Sealing the gap where pipes enter the house takes away one of the easiest routes in. It won't replace treatment, but it helps.When termites swarm here.
Across Fontana, desert subterranean termites usually swarm from July through September, around dusk after monsoon storms. Drywood termites around Fontana 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 Fontana out to Riverside and San Bernardino. Many homes in Fontana sit on concrete slabs, so termites come up through expansion joints, plumbing gaps and settlement cracks.
A year of termites in Fontana.
- Summer: swarm season in Fontana, usually after monsoon storms. Watch porch lights at dusk. - Summer: with highs around 95°F in Fontana, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Fall: with about 15 inches of rain a year in Fontana, make sure gutters and downspouts carry water well away from the foundation. - Winter: a good time to book an inspection in Fontana, before swarm season starts.
What happens at an inspection.
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. On a slab, they focus on joints, cracks and pipe gaps.
Termites or ants?
- 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. - 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.
Getting ready for treatment day.
Keep kids and pets inside while the Fontana 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). Drill holes in slabs or patios get patched afterward. Prep is light for liquid treatments and bait stations. Clear a walking path along the exterior walls. Move boxes away from garage walls. Flag sprinkler heads and buried lines.
Mulch and termites.
Pull mulch back from the foundation and keep the layer thin. A dry gap along the house makes mud tubes easier to spot; in Fontana's dry climate the risk is irrigation and leaky hose bibs rather than rain. Wood chips touching the siding trap the moisture termites are after.
Questions to ask before you sign.
- 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 do I need to do before and after treatment? - Which termites did you find, and where?
What affects the price
- Liquid barrier versus bait station system.
- Time of year and how booked up local companies are.
- Linear feet of foundation to be treated.
- Local labor rates and licensing requirements.
- Extent of existing damage needing repair.
- Whole-house fumigation versus spot treatment.
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What's your biggest concern about termites?
When to call for help
Lenders often ask for one. It's also the cheapest termite service. Carpenter ants leave clean tunnels and sawdust. Termites leave mud. Call if you see mud tubes, pellets or an indoor swarm. Hollow-sounding wood is another clue. Buying or selling? Get a wood-destroying insect (WDI) report either way.
What you can do yourself
Some of the work is yours. Pull mulch back from the foundation. Fix leaks and clear gutters. Keep firewood away from the house. 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.
Termites in Fontana
Most houses will see termites at some point. With summer highs around 95°F, Fontana's hot-summer mediterranean climate decides when local termites are busiest. A typical home in Fontana is worth around $600k, which puts a few hundred dollars for an inspection and prevention in perspective. Fontana only sees about 15 inches of rain a year, so local termites gather wherever water collects, like sprinkler zones, hose bibs and AC drain lines. Termite activity in California is above average.
Local research
Termites in Fontana, 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 Fontana, 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 Fontana
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
- Ventilate crawl spaces and control humidity.
- Seal cracks in the foundation and slab.
- Install a vapor barrier over crawl space soil.
- Address wood-to-soil contact at steps, fences, and trellises.
- Repair rotting trim, fascia, and window frames.
- Set deck and porch posts on concrete, not soil.
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 Fontana, soldier termites can't feed themselves, so the workers feed them mouth to mouth.
Across Fontana, some tropical termites grow fungus gardens inside the nest and eat the harvest.
Questions people ask
Can termites damage a house on a concrete slab?
With no crawl space to inspect, the first sign in a Fontana home may be damaged trim or a swarm indoors. Bait stations around a Fontana slab home are a popular option because they avoid extensive drilling through floors. Slab construction in Fontana hides termite entry very well.
What is the difference between subterranean and drywood termites?
Drywood termites live entirely inside dry wood with no soil contact. Subterranean colonies are far larger and cause most of the damage in Fontana, California, but drywood infestations are harder to reach. Subterranean termites nest in soil and reach a Fontana home through tubes and cracks, and they need moisture.
Do I need a termite inspection when buying a house?
Many lenders serving Fontana require a WDI report before closing, and VA loans require one in many states. Even when it is optional, an inspection on a Fontana home costs little and can surface damage or old treatments the seller may not know about. In most cases, yes.
Do I have to leave my house during termite treatment?
Fumigation is the exception. A Fontana fumigator will give you a checklist for bagging food and vacating. Most termite work in Fontana, California is done with you at home. Follow the applicator's instructions about foam-treated rooms or freshly drilled areas.
What time of year do termites swarm?
Drywood swarms come later in the year. Either way, swarmers indoors in Fontana are a reason to schedule an inspection. Swarm season in Fontana, California depends on the species and the weather. Most native subterranean swarms happen from March through May.
Are termites common in California?
Around Fontana, the usual culprit is the desert subterranean termite.
Nearby cities
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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