Do termites really eat wood inside houses?

It's worth being direct: this hub exists mainly to correct exaggerated damage claims, and termites are one of the few pests where that correction runs the other way. Eastern subterranean termites genuinely eat structural wood inside New Hampshire homes, and the risk is well documented rather than anecdotal or overstated marketing copy.

The mechanism is specific. Termites cannot digest cellulose on their own — they depend on protozoa living in their gut to break wood down into usable nutrients. A worker termite without those gut symbionts would starve even surrounded by wood. That dependency is also why termites need consistent access to moisture, and why they build mud tubes to bridge dry, exposed gaps like a foundation wall on their way to a wood source.

The U.S. Forest Service estimate, cited by pest professionals including Colonial Pest Control, puts a mature colony's feeding rate in concrete terms: roughly 60,000 workers eating about one-fifth of an ounce of wood per day. At that rate, it takes five to six months for a colony to fully consume just a one-foot length of a standard 2x4. That's a genuinely useful number to hold onto, because it reframes 'termites are eating your house' from an abstract horror into a specific, slow, measurable process.

The part of the common claim that doesn't hold up is timing. 'Silent destroyers' and 'damage in the blink of an eye' language implies a home could be compromised in days or weeks. NC State Extension's actual figure is that serious structural damage takes three to eight years of ongoing, untreated feeding to occur — and New Hampshire's cold winters slow termite activity for a meaningful part of each year on top of that.

That gap between real and invented isn't a reason to relax about termites; it's the opposite. It means a homeowner who catches the signs early — mud tubes, swarmers, hollow-sounding wood — has real time to act before serious structural compromise sets in. Drywood and Formosan termites, which can behave differently, are not established in New Hampshire; the eastern subterranean termite is the species actually at work here, and its pace is what the evidence above describes.