Can termites in my firewood actually infest my house?

Individual termites that ride indoors on a piece of firewood cannot found a new colony inside your house, because subterranean termites depend on a continuous connection to soil moisture to survive and reproduce — a stray insect separated from that soil link will simply dry out and die. Purdue University entomology extension states this directly: termites accidentally brought indoors with firewood will not infest structural wood. What does matter is why they were in that firewood in the first place — if the pile was sitting on damp ground near your foundation, that's worth a look, but the log itself carrying a bug indoors is not the mechanism to worry about.

How far should firewood be kept from my house?

A commonly cited benchmark from Purdue University entomology is at least three feet between a woodpile and any building, with more distance being better where you have the space. That distance serves two purposes: it removes food and moisture right next to the foundation where you'd least want them, and it improves air circulation around the pile itself, helping the wood dry faster and become less attractive to any moisture-seeking pest. Elevating the pile off the ground on a rack or blocks matters just as much as the horizontal distance, since ground contact is the direct route to soil moisture.

Is it safe to spray my firewood with pesticide to keep termites away?

No — this is actively discouraged, not just unnecessary. Purdue entomology extension has warned that treating firewood and then burning it relatively soon afterward creates a real risk that the chemical volatilizes and releases fumes into your home through the fireplace or wood stove. Pesticide also cannot penetrate deeply enough into a log to reach termites that might already be inside it, so the treatment doesn't even accomplish its stated goal. The safe, effective approach is distance and dry storage, not chemical treatment of the wood itself.

I found a termite on a log I brought inside — what should I do?

Simply remove it; a single termite (or even a few) separated from the soil-connected colony outside will not survive long indoors and cannot start a new infestation on its own. There's no need for pesticide or alarm over one insect. The more useful response is to look at where that firewood was stored outside — if the pile was sitting directly on soil near your foundation, that's the condition worth correcting, both for termite prevention and because a pile in that location is also harder to keep dry and free of rot.

Daniel Brady · NH-Licensed Pesticide Applicator · License #782664

How to Prevent Termites When Storing Firewood Near a House

Real termite risk

This is a genuine risk, but with an important correction to common marketing claims: the danger is not that a termite already inside a log will 'infest your house from the inside.' Purdue Extension entomology states directly that termites accidentally brought indoors with firewood will not infest structural wood, though their presence in firewood piled close to the home may warrant a home inspection.

Real where a woodpile sits on soil against the foundation — it acts as a moist, cellulose-rich bridge that keeps a colony foraging right at the house. A stray termite that rides indoors on a single log is not a threat by itself.

At a glance

What it is: Real termite risk
The driver: A woodpile bridging soil and the foundation
Who fixes it: You can handle this

What this actually is

Real termite risk

The enabling condition

Pull the right lever, not the sprayer

The organism is downstream of one condition. Remove that condition and it has no foothold — which is why prevention here is rarely a pesticide.

The driver

A woodpile bridging soil and the foundation

Firewood stacked on the ground beside the foundation offers food, moisture, and cover at the exact spot you least want termite activity, and it hides the foundation from inspection. Federal guidance is explicit: do not pile or store firewood or wood debris next to the house.

Source:U.S. EPA— Termites: How to Identify and Control Them

The lever stack

3 levers, honestly ranked

Sorted by what actually moves the driver — primary first, theatre last. Effort is graded so you know what's a five-minute fix and what's a real project.

Primary — moves the driverQuick DIY
Move the pile well away from the house and off the ground
Store firewood away from the foundation and elevated on a rack or metal stand so no wood touches soil. Purdue entomologist Timothy Gibb has recommended allowing at least three feet between the wood and a building, noting this keeps insects away from the house and also allows better air circulation, which dries the wood faster — with greater distance being even better where space allows. Distance plus off-ground storage is the actual mechanism: subterranean termites don't travel far without a food-and-moisture link, so breaking the soil contact and the adjacency to the house removes the bridge entirely.
SupportingQuick DIY
Keep the pile dry and rotate it
Stack the wood loosely for airflow, cover the top while leaving the sides open, and burn the oldest wood first so logs don't sit long enough to stay damp and decay. Dry wood is far less attractive to moisture-dependent subterranean termites than a pile that stays wet against the ground.
Theatre — looks busy, does littleQuick DIY
Never treat firewood with pesticide
Do not spray firewood to try to 'protect' it. Purdue's entomology extension has warned that treating wood and then burning it soon after creates a real chance the chemical can volatilize and release fumes into the house, and pesticide cannot meaningfully penetrate a log to reach termites anyway. Bring wood indoors only as needed for a day or two of use, not for long-term storage.
Note: This step is actively harmful, not just useless — it introduces an indoor air-quality hazard for no real termite benefit. It's listed to warn against it, not to recommend it.

The honest router

Whose job is this, really?

Who actually fixes it

You can handle this

Relocating and restacking a woodpile costs nothing but effort and is entirely within a homeowner's control.

Escalate when

You find mud tubes running from where a pile sat up the foundation, or signs of activity in the structure itself — call a licensed pest professional. A stray termite that rode in on a log and appears indoors will simply die; just remove it.

Local to New Hampshire

How this calibrates for NH

New Hampshire context

Wood heat is common across New Hampshire, so this is a genuinely useful, cost-free fix — it's rearrangement, not renovation. The honest calibration for the state's southern counties, where the Eastern subterranean termite persists near the northern edge of its range, is that a stray termite from firewood cannot found a colony indoors without a soil connection; the risk lives entirely in how and where the pile is stored outside.

NH-licensed applicator #782664 (NHDAMF, RSA 430) · NEPMA member · family-owned since 2017.

Follow-up questions

Frequently asked

Sources(4)

[1]
U.S. EPA
Termites: How to Identify and Control Them
[2]
Purdue University News
Firewood should be stored outside (Timothy J. Gibb)
[3]
Purdue Extension
E-67-W: Insects in Firewood (Timothy J. Gibb)
[4]
UF/IFAS Extension
ENY-2044/IN1277: Termite Prevention and Control

Written & reviewed by

Verified

Daniel Brady

NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)

Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.

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How to Prevent Termites When Storing Firewood Near a House

Pull the right lever, not the sprayer

A woodpile bridging soil and the foundation

3 levers, honestly ranked

Move the pile well away from the house and off the ground

Keep the pile dry and rotate it

Never treat firewood with pesticide

Whose job is this, really?

How this calibrates for NH

Frequently asked

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