Can firewood stored against a house attract pests?

It isn't just that bugs live in bark, though they do. Stacked wood is genuine overwintering habitat for carpenter ants, wood-boring beetles, and spiders, and when that pile sits against a warm wall, insects already sheltering in it can move indoors through the same gaps the wood is touching. That's a real but secondary risk.

The bigger issue in a New Hampshire winter is what the pile does for rodents. A woodpile against the foundation is a sheltered, wind-blocked corridor that a mouse or rat can use to explore your foundation and siding for days without ever being exposed. It's staging ground, not just habitat — and staging ground located inches from your sill plate is exactly the wrong kind of convenient.

The fix here is almost entirely physical, and it's free. Distance and elevation matter more than any product: extension guidance consistently lands on keeping the pile roughly 30 feet from the structure and off the ground on a rack, pallets, or rails.

Covering the pile only on top — not wrapping it — keeps rain and snow off without trapping moisture inside the stack, since a damp, fully tarped pile becomes more attractive to insects, not less. And don't reach for insecticide as a shortcut: spraying firewood before burning it releases the chemical as smoke inside your home, which several extensions call out directly as a real hazard rather than a fix.

This risk factor earns its major grade for a simple reason: it's rare to find a pest-prevention step that's this well-documented, this cheap, and this entirely within a homeowner's control. Unlike your home's age or its distance from woods and water, nobody has to hire anyone or spend anything to fix a woodpile — it just has to get moved.

That combination — real, sourced risk plus a free, same-afternoon fix — is why extension literature returns to it again and again, and why it's worth doing before the ground freezes rather than after.