Fumigation vs Spot Treatment for Termites in Houston
The right drywood termite treatment depends on how widespread the infestation is — not on which method costs more or generates more revenue. Resolve starts with a thorough inspection and recommends the least disruptive treatment that genuinely resolves the problem.
- Inspection determines which method fits your specific situation
- Spot treatment for localized, accessible infestations — no displacement
- Tent fumigation for widespread or inaccessible infestations
- Honest recommendation regardless of which method costs more
How to Know Which Drywood Termite Treatment You Actually Need
Fumigation and spot treatment are both effective drywood termite methods — applied to the right situations. The mistake many Houston homeowners make is accepting a fumigation recommendation without understanding whether their infestation actually requires full-structure coverage. Fumigation is more comprehensive, but it is also more disruptive and more expensive than spot treatment by wood injection.
Spot treatment delivers termiticide directly into infested wood members — window frames, door frames, exposed rafters, or furniture. For a localized infestation in one or two accessible locations, spot treatment eliminates the colony without requiring displacement, hotel stays, or full-structure preparation. It is equally effective as fumigation for the right scenario.
Fumigation is the right choice when colonies have spread beyond accessible treatment points — into wall cavities, attic framing, or multiple inaccessible locations. A single tent treatment reaches every location simultaneously, eliminating colonies that spot injection cannot access. The decision should be based on a thorough inspection, not on which method is easier to recommend.
How the Treatment Decision Is Made
Inspection drives the recommendation — not a default script.
- 1
Drywood Inspection
We locate all frass deposits, probe suspect wood, and check attic, trim, and voids to build a complete map of all active colonies.
- 2
Accessibility Assessment
We determine whether identified colonies are in accessible wood members — spot treatment candidates — or in inaccessible structural voids that require fumigation.
- 3
Honest Recommendation
Spot treatment is recommended when it genuinely resolves the infestation. Fumigation is recommended only when colonies are confirmed in locations spot injection cannot reach.
- 4
Written Quote
Both methods are quoted in writing. You understand exactly what is covered and why before committing to any treatment.
Why the Inspection Step Is What Most Companies Skip
Spot treatment success depends entirely on whether the inspector correctly identified all active colonies. A treatment that addresses 80 percent of active colonies leaves the remaining 20 percent to continue spreading — often reappearing in new locations within months. This is why some homeowners who have received spot treatments repeatedly keep seeing frass: not because spot treatment doesn't work, but because the inspection didn't map the full infestation before treatment was selected.
Tent fumigation eliminates this problem by treating the entire structure regardless of where colonies are located. Its limitation is that it provides no ongoing barrier — a new drywood colony can be introduced after treatment through infested furniture, lumber, or flying swarmers. This is why annual inspection is recommended after fumigation, particularly for older Houston homes.
The honest answer for most Houston homeowners is that the right choice is not obvious from symptoms alone. A single pile of frass doesn't reveal whether the infestation is isolated to one accessible window frame or has spread through three wall cavities. A thorough inspection does. Committing to either method without that inspection is either paying more than necessary or not paying enough to solve the problem.
Fumigation vs Spot Treatment: Complete Comparison
Both methods are legitimate — the right one depends on where your colonies are.
| Feature | Tent Fumigation | Spot Treatment |
|---|---|---|
| Reaches inaccessible wall cavities and framing | ✓ | ✗ |
| Eliminates all colonies simultaneously | ✓ | Accessible locations only |
| Requires 24-48 hour displacement | ✓ | ✗ |
| Appropriate for localized, accessible infestations | Overkill | ✓ |
| Lower cost per treatment | ✗ | ✓ |
| Same-day completion possible | ✗ | ✓ |
| Written warranty included | ✓ | ✓ |
Fumigation vs Spot Treatment FAQs
How do I know if I need fumigation or spot treatment?
Can I just choose spot treatment to avoid the disruption?
Is fumigation always more expensive than spot treatment?
What happens if spot treatment doesn't resolve the problem?
Can fumigation and spot treatment be used together?
Decision Factors: Spot Treatment vs Fumigation
Six factors that shape which method is appropriate for your situation.
Colony Location
Spot treatment reaches accessible wood members. Fumigation reaches inaccessible framing, wall cavities, and attic structure where direct injection cannot be applied.
Colony Count
One or two confirmed colonies in accessible locations are good candidates for spot treatment. Multiple colonies in multiple rooms or areas suggest fumigation may be necessary.
Frass Pattern
Frass appearing in multiple rooms or without identifiable accessible wood members nearby indicates infestation spread that spot treatment may not fully reach.
Structure Age
Older Houston homes with plaster walls, complex framing, or limited attic access frequently have infestations in locations where spot injection is not feasible.
Prior Treatment History
Recurring frass after previous spot treatment often indicates active colonies that were not mapped in the original inspection — a strong indicator for fumigation evaluation.
Displacement Tolerance
Spot treatment requires no displacement. Fumigation requires 24-48 hours away from the property. This is a real planning factor but should not override accurate treatment selection.
Why Resolve's Inspection-First Approach Produces Better Outcomes
The treatment recommendation follows the inspection — not the other way around.
- Full structural inspection before any recommendation — frass mapping, probing, attic check
- Spot treatment recommended whenever it genuinely resolves the infestation
- Fumigation recommended only when colonies are confirmed in inaccessible locations
- Written quote for the appropriate method before any work begins
- Written warranty on both methods — re-treatment at no charge if activity returns
- No recurring problem from undertreated infestations — right method recommended the first time
Related Fumigation and Treatment Resources
Termite Tenting
Full-structure tent fumigation process and what to expect.
Fumigation Cost
What affects termite fumigation pricing in Houston.
Fumigation Preparation
Step-by-step preparation checklist for tenting day.
Drywood Termite Treatment
All drywood treatment options for Houston homeowners.
Drywood Spot Treatment
Direct injection for localized drywood infestations.
Get a Drywood Termite Assessment for Your Houston Home
Inspection-first — the right method is confirmed after mapping your specific infestation, not before. Same-day inspections available across Greater Houston.