A mid-century modern Eichler-style home in a Silicon Valley neighborhood — San Mateo, California service area

Structure Fumigation

Fumigation in San Mateo, CA

Name: 101 Exterminators Inc.
Address: 635 Sanborn Pl Ste 12, Salinas, CA, 93901, US
Telephone: (831) 500-1613

101 Exterminators performs structural fumigation in San Mateo when a drywood termite infestation has spread past what local treatment can reach, using Vikane (sulfuryl fluoride) under SPCB Lic. #9119. Older Baywood and Hayward Park houses hold decades of framing behind lath, plaster and stucco, where evidence in three or four separated members rarely means only three or four galleries. We inspect before we recommend it.

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Local Context

Plaster, Stucco and Ninety Years of Framing Hide What Spot Treatment Has to Reach

Tenting is decided by reach, not by how alarming a single finding looks. Drywood termites (Incisitermes minor) live entirely inside wood, and one structure can hold several unconnected colonies at once. In San Mateo's pre-1940 stock — the Craftsman bungalows of Hayward Park, the period-revival and Spanish Colonial Revival houses in Baywood and on the older blocks around Central Park — framing sits behind lath and plaster inside and stucco outside. Drill-and-inject works well when we can find and reach a gallery. It does nothing for the one two bays over.

The 1950s and 1960s houses hide wood a different way. Low-slope roofs, wide overhangs and exposed beam ends let drywood termites in above the ceiling plane, and once galleries run through a beam that continues from the eave through to the interior, there is no accessible face along most of its length. Gas reaches all of it because it travels as a gas — into joints, voids, checks in the wood, and the parts of a roof assembly nobody can open without demolition.

San Mateo also makes tenting logistically specific. Lots in San Mateo Park and Baywood are close-set with mature trees over the roof, and much of the Bay Meadows and Hillsdale housing is attached or multi-unit, which limits what can be tented at all. Both facts belong in the recommendation, not in a surprise on the day of the job.

How We Work in San Mateo

Before we recommend tenting a San Mateo house we map every finding — attic, eaves, garage framing, window and door headers, and any accessible sub-area — and show you why the evidence is not localized. If it is localized we say so and treat it locally instead. When fumigation is the right call we run the whole sequence: preparation checklist, tarping and sealing at the foundation, neighbor notification, monitored gas introduction, aeration, and clearance readings by a certified clearance company before anyone re-enters.

San Mateo Climate

The Peninsula’s marine influence and seasonal rain can affect moisture around a home. Look at drainage and wood contact at the property before drawing a termite conclusion.

Housing Stock

San Mateo has older raised-floor houses and later slab construction. A crawl space may exist, be inaccessible, or not exist at all; those distinctions belong in the report.

Why Local Expertise Matters

Ask which parts of the structure were seen and which were concealed by a slab, finished addition, or blocked access. If termite activity is confirmed, compare the written scope of localized and wider treatment options before choosing one.

Warning Signs

When to Ask About Fumigation in San Mateo

We manage the entire fumigation process: pre-fumigation inspection and documentation, structure tenting with certified fumigation tarps, introduction of Vikane fumigant to specified concentration, aeration protocol, post-fumigation clearance testing, and coordination with a certified fumigation clearance company before you return. We also provide bagging requirements and preparation guidance for food, medications, and plants.

Multiple locations of frass (termite pellets) throughout the structure — not just one area

Evidence of drywood termites in structural framing, not just surface wood

Previous localized treatments that have not resolved the infestation

Inspector-identified infestation in inaccessible areas (wall cavities, sealed areas)

WDO report showing extensive Section 1 conditions throughout the structure

Visible winged termites (swarmers) emerging from multiple locations

How It Works

What to Expect from Fumigation in San Mateo

If you already have a pest inspection report, have it ready when you call. The findings and access to the structure help determine whether fumigation is appropriate.

Pre-Fumigation Inspection

We document all entry points, confirm the infestation scope, measure the structure for gas calculation, and review the preparation checklist with you at least 3 days before the fumigation date.

Structure Tenting

Our crew tents the entire structure with specialized fumigation tarps, sealed at the foundation to prevent gas escape. Neighbors are notified as required, and warning signs are posted.

Gas Introduction & Monitoring

Vikane is introduced to calculated concentration and held for the required exposure time. Readings are monitored throughout the process to confirm effective dosage.

Aeration & Clearance

The structure is thoroughly aerated until Vikane levels are below the safe entry threshold. A certified third-party inspector confirms clearance levels before we authorize re-entry.

Why 101 Exterminators

Why Choose 101 Exterminators for Fumigation in San Mateo

Complete Structure Coverage

Gas fumigant penetrates every void, cavity, and piece of wood in the structure — including areas impossible to reach with liquid or foam treatments.

Vikane — Industry Gold Standard

Vikane (sulfuryl fluoride) is the most widely used and thoroughly studied structural fumigant. It leaves no residual after aeration — the structure is safe to re-enter after clearance.

Third-Party Clearance Testing

Re-entry is only authorized after independent clearance testing confirms gas levels are below threshold. No guesswork on when your home is safe.

Real Estate Compliant

Fumigation clears all Section 1 termite conditions for real estate transactions. We issue the required Completion Notice accepted by lenders and escrow companies.

Common Questions

Fumigation FAQs for San Mateo

Can an attached townhouse at Bay Meadows or Hillsdale be fumigated?

Attached construction limits fumigation and sometimes rules it out. A tent has to seal to the ground around a complete structure, so an attached unit generally means fumigating the entire building rather than one address, which takes the association, the owner and every occupant coordinating. In much of San Mateo's attached stock we go to local treatment instead — drill-and-inject or borate work on accessible framing. The inspection decides which is realistic.

What happens to the mature trees over my Baywood house during a fumigation?

Limbs touching or overhanging the roof usually need trimming back before the tarps go on, and the crew protects landscaping at the tent perimeter. That is a real consideration in San Mateo Park and Baywood, where oaks and street trees often sit directly over the structure. We flag it at the pre-fumigation inspection so it becomes scheduled work instead of a morning-of problem. Houseplants come out; in-ground planting at the drip line gets covered as needed.

How do I know the gas is gone before my family goes back into the house?

Clearance is measured, not estimated. After the required exposure period the structure is aerated on a set protocol, and a certified clearance company takes readings inside before the seal is released and anyone re-enters. You do not go back in on our word alone — the clearance is documented. We hand you the preparation checklist for food, medications and plants well ahead of the date so nothing has to be sorted out that morning.

Local Pest Pressure

Common Pests We Treat in San Mateo

Every area has its own pest profile shaped by climate, housing, and geography. These are the pests we see and treat most often in San Mateo — tap any one to learn how to identify it and what treatment involves.