Homeowners usually arrive at this question already leaning one way. Fumigation
sounds drastic — a tent over the house, three days somewhere else, everything in
bags. Orange oil sounds reasonable — a plant extract, no evacuation, done in an
afternoon.
That instinct is understandable, and it is the wrong place to start. The choice
is not really between two products. It is a consequence of what the inspection
found.
The short answer
Whole-structure fumigation treats the entire building at once, including
colonies nobody has located. Localized treatment, including orange oil, treats
only the specific galleries an inspector found and could reach. If the
infestation is confined and accessible, localized treatment can be appropriate.
If it is widespread, hidden, or in inaccessible framing, fumigation is the option
that reaches it.
First: which termite are you dealing with?
Before comparing treatments, the report has to establish the organism, because
the two common species in this area live completely differently.
Drywood termites live inside the wood itself. They do not need contact with
soil and they do not need an external moisture source. A colony can sit in a
roof rafter for years with nothing visible from the ground but a small amount of
frass — the pellets they push out of the gallery.
Subterranean termites need soil contact and moisture. They nest in the ground
and travel up into the structure, often through mud tubes on foundation walls.
This distinction decides the conversation. Fumigation and orange oil are both
answers to a drywood problem. A subterranean infestation is a different
treatment path entirely — usually soil treatment and barriers, because the
colony is not in the building at all. Fumigating a structure does nothing to a
colony living in the yard.
If you are being offered a tent for a subterranean problem, ask why.
What fumigation does
Fumigation encloses the entire structure and introduces a gas that penetrates
wood throughout the building.
Its defining property is coverage. It reaches framing nobody opened up, wall
cavities nobody inspected, and colonies nobody found. On a house with multiple
infestation points — or one where the inspector recorded areas that could not be
accessed — that coverage is the entire point.
What it requires in exchange is real:
- Occupants and pets out of the structure for a set period
- Food and medications bagged or removed according to instruction
- Roof and landscaping access for the tenting crew
- Coordination with neighbors, and often with an escrow timeline
What it does not do is protect the house afterward. Fumigation eliminates
what is present at the time of treatment. It leaves no residual barrier. A
structure that stays attractive to termites can be re-infested later.
What localized treatment does
Localized treatment — including orange oil, which is a d-limonene extract —
means injecting product directly into the wood where the infestation was found.
Its defining property is proportionality. If an inspection locates a contained
colony in an accessible member, treating that member is a reasonable response.
The household does not move out. The work is finished the same day.
Its limitation follows from the same fact: it only treats what was located.
Product injected into one rafter does not travel through the structure looking
for other colonies. If there is a second infestation in a wall cavity nobody
opened, localized treatment does not reach it.
This is why the quality of the inspection matters more here than anywhere else.
Localized treatment is only as good as the map of where the termites are.
Side by side
| Fumigation | Localized / orange oil | |
|---|---|---|
| Scope | Whole structure | Only located galleries |
| Finds hidden colonies | Yes | No |
| Occupants leave | Yes | No |
| Residual protection | No | No |
| Best case | Widespread or inaccessible infestation | Contained, accessible, well-mapped |
Note the row that is identical in both columns. Neither treatment prevents a
future infestation. Any company telling you otherwise is selling something
that does not exist.
How the decision actually gets made
In practice it comes down to three questions:
- How many separate infestation points did the inspection find? One
contained colony is a different situation from four across two floors. - How much of the structure could actually be inspected? If significant
areas were inaccessible, a localized treatment is a decision made with
incomplete information. - What is the timeline? Escrow deadlines and lender requirements often
shape what is realistic, particularly when a clearance is needed before
closing.
An honest recommendation depends on those answers, which is why nobody can give
you one over the phone. The report comes first.
The part most people skip
Whichever treatment is chosen, the conditions that made the house attractive
tend to be the ones listed in Section 2 of the report — wood in contact with
soil, moisture in the crawl space, debris left under the structure.
Treatment removes the termites. It does not remove the invitation.
A house that gets fumigated and keeps a leaking shower pan is a house that will
see an inspector again. The most durable outcome is usually treatment plus the
unglamorous corrections: fixing the leak, clearing the debris, breaking the
wood-to-soil contact.
Before you choose
Ask the company three things: what species was identified, how many infestation
points were found, and how much of the structure could not be inspected. If those
answers are vague, the treatment recommendation built on them is vague too.
J&M Termite Control has treated Bay Area homes from Mountain View since 1973,
working under California Branch 3 registration #5223. We offer both
whole-structure fumigation and localized treatment, including green product
options, and the recommendation follows the report — not the other way around.
Request an inspection or read more
about the treatment methods we use
and what happens during an inspection.
