Structure Fumigation
Fumigation in Fremont, CA
Fumigation in Fremont is what we recommend once drywood termite galleries have spread past what drilling and injection can reach — several framing members, evidence in more than one part of the house, or activity behind finished surfaces. 101 Exterminators tents the structure and introduces Vikane (sulfuryl fluoride), which penetrates every void and joint in the frame. We handle prep, aeration, and clearance. SPCB Lic. #9119.
Home maintenance
How do you keep drywood termites from returning to a Fremont home after fumigation?
Seal the wood and check it each swarm season. Fumigation kills the drywood colonies inside the tented structure and leaves nothing behind to stop next year’s swarmers. Fremont’s late summers are warm, with August and September highs averaging about 78°F, and drywood termites fly in summer and fall, so the months after the tent are the time to close up the outside of the house.
Repaint trim and siding after the tent
Drywood swarmers get into framing through cracks and bare wood. Scrape and repaint weathered fascia, window trim and siding in the months after fumigation, starting on the south and west faces that take the afternoon sun.
Replace torn vent screens
Check attic, gable and eave vents for torn, loose or painted-over screens and replace them with intact fine mesh. An open vent lets winged termites straight into the attic framing.
Patch old holes and note them
Vacuum leftover pellet piles and fill kick-out holes with wood filler. Write down where they were, so a new pile in the same spot next fall reads as new activity.
Check detached sheds and patio covers
Only the structure under the tent was fumigated. A detached shed, pergola or patio cover outside it can hold a colony that swarms toward the house, so check those for pellets too.
Look over used wood furniture first
Drywood termites also move inside furniture and framed pieces. Check the joints and underside of a secondhand dresser or antique for pellets before it comes into the house.
When to do it
Paint and screen work in the spring and summer after the tent; a pellet check in September, among Fremont’s warmest months.
Maintenance guidance: UC IPM, Drywood termites
Warning Signs
When to Ask About Fumigation in Fremont
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 Fremont
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 Fremont
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 Fremont
Can a townhome near Warm Springs BART be tented for termites?
Only with the neighbors involved. A tent has to seal a complete structure, so an attached unit sharing a party wall means the entire building under that roofline is fumigated together — every household preparing at once, usually with HOA coordination. When that is not workable, we look at drill-and-inject treatment of the accessible members and tell you plainly what it reaches and what it does not.
What time of year is easiest for fumigating a house in Fremont?
The dry stretch from May through September is the simplest window, since Fremont takes about fifteen inches of rain and nearly all of it falls between October and April. Wind matters more than heat here. The breeze off the Bay builds through the afternoon on the flats, so tarping crews work early in the day. Fumigation still happens in winter; it just gets scheduled around storms.
What has to leave the house for a Fremont fumigation?
People, pets, and houseplants leave; furniture, clothing, and electronics stay. Anything meant to be eaten, drunk, or taken as medication gets sealed in the nylon fumigation bags we supply, including opened pantry items and pet food. Unopened cans and bottles with the factory seal intact are fine as they are. Outside the house matters too on a Fremont lot: shrubs and vines have to be cut back off the walls so the tarp can reach the ground, and on the narrow side yards common in the Glenmoor and Parkmont tracts that often means clearing a fence-line hedge before the tarp date. We walk the checklist with you in person first.
Local Pest Pressure
Common Pests We Treat in Fremont
Every area has its own pest profile shaped by climate, housing, and geography. These are the pests we see and treat most often in Fremont — tap any one to learn how to identify it and what treatment involves.
Fumigation · Fremont
Schedule Service in Fremont
Tell us what you have found and where. For a sale or refinance, request a separate paid WDO inspection.