Wood mites and termites are fundamentally different pests that require completely different responses. Wood mites are tiny arachnids that feed on mold and fungi growing on damp wood. Termites are insects that eat the wood itself. Knowing which one you’re dealing with determines whether you need a dehumidifier or a professional exterminator.
What Wood Mites Actually Are
Wood mites aren’t a single species but a group of mites commonly found on damp wood surfaces. The most frequently encountered include the mold mite (Tyrophagus putrescentiae) and the grocer’s itch mite (Glycyphagus domesticus). They’re extremely small, usually white or translucent, and barely visible to the naked eye. You’ll often see them as a fine, moving dust on wood surfaces, especially in damp basements, bathrooms, or on outdoor decking.
These mites don’t eat wood. They feed on the fungal growth and mold that colonizes damp wood. They seek out moist environments specifically because that’s where their food source thrives, consuming leaf mold, fungal threads, and other organic matter. If you’re seeing wood mites, you have a moisture problem first and a mite problem second. They can also trigger allergic reactions in some people, causing skin irritation or respiratory symptoms.
How Termites Differ
Termites are social insects that live in organized colonies and consume cellulose, the structural fiber in wood. Unlike mites, they cause real structural damage. A mature termite colony can eat through framing, flooring, and support beams over months or years, often without any visible sign on the wood’s surface. Subterranean termites, the most common type in the U.S., build mud tubes from the soil to reach wood above ground. Drywood termites live entirely inside the wood they consume and need no soil contact at all.
Where wood mites signal a moisture issue, termites signal a structural threat. The cost difference in treatment reflects this: wood mites can typically be handled with DIY moisture control, while termite treatment almost always requires professional intervention involving soil-applied liquid treatments or baiting systems.
Telling Them Apart by Appearance
Size is the most obvious difference. Wood mites are nearly microscopic, typically less than 0.5 mm, and appear as pale white or tan specks. You might notice them as a powdery, slightly moving layer on a piece of firewood or along a damp baseboard. Termites are much larger. Worker termites are about 3 to 5 mm long, pale and soft-bodied. Reproductive termites (swarmers) have wings, dark bodies, and are roughly 6 to 10 mm long.
Body structure is another clear marker. Mites have eight legs and rounded bodies, like their spider relatives. Termites have six legs, straight antennae, and a thick waist connecting their thorax and abdomen. If you see wings, you’re not dealing with mites. If you need a magnifying glass to see the creature at all, you’re likely looking at mites.
Signs of Infestation Look Very Different
Wood mites leave behind almost no visible damage. What you’ll notice instead is the mold or fungus they’re feeding on: dark stains, musty smells, or fuzzy growth on wood surfaces. The mites themselves cluster on the surface rather than burrowing inside.
Termite evidence is more distinctive. Drywood termites push their droppings, called frass, through small kick-out holes in wood. These pellets look like tiny coffee grounds or sawdust, typically no larger than 0.04 inches, oval-shaped with six concave sides. They range from light brown to black depending on the wood being consumed. You’ll find small piles of frass on floorboards, window sills, or porches directly below the infested wood. Subterranean termites leave mud tubes, pencil-width tunnels of soil and saliva running along foundation walls or piers.
Hollow-sounding wood when tapped, buckling paint, or sagging floors all point to termites rather than mites. Wood mites simply don’t have the ability to cause this kind of damage.
Getting Rid of Wood Mites
Because wood mites depend entirely on moisture and mold, eliminating their food source eliminates them. Start by finding and fixing whatever is keeping the wood damp. Repair leaks, clear leaf litter away from decking, move planters off wood surfaces, or run a dehumidifier until the wood reads below 15 percent moisture on a pin meter. Keep indoor humidity between 30 and 50 percent, and run bathroom and kitchen exhaust fans for 20 minutes after showers or cooking.
Once the moisture source is addressed, vacuum affected areas with a HEPA vacuum and a crevice tool to pull mites out of cracks and wood grain. Empty the canister outside. Wipe down surfaces with hot soapy water to remove mold spores and the mites clinging to them. For decks, furniture, or unfinished framing, a steam cleaner set to 200°F kills mites and eggs on contact while sterilizing surface mold.
For persistent problems, dust cracks and crevices with food-grade diatomaceous earth, which dehydrates mites within about 48 hours. You can also spray neem oil (2 tablespoons per gallon of water) on affected outdoor surfaces, reapplying after rain. If mites have spread to bedding or curtains, wash everything in hot water above 130°F and dry on high heat. For long-term prevention on bare structural wood, borate treatments kill existing mold and prevent regrowth, cutting off the mites’ food supply entirely. Re-staining or sealing decks every two to three years also prevents the mold that attracts mites in the first place.
Getting Rid of Termites
Termite control is a fundamentally different situation. The most common treatment is a soil-applied liquid termiticide that creates a chemical barrier around your home’s foundation, killing termites that try to cross it and stopping new colonies from reaching the structure. This involves trenching around the perimeter, and often drilling through concrete slabs like garages, porches, and patios to treat the soil beneath. The treatment must reach a depth of four feet or the top of the foundation footer.
Baiting systems are another option. Stations are installed in the ground around the home, and termites that find the bait carry it back to the colony. This approach works more slowly but targets the entire colony rather than just creating a barrier.
Both methods require professional pest control. Termite treatment involves specialized equipment, regulated chemicals, and knowledge of local building codes. Most states require licensed applicators. This is not a DIY project, and delaying treatment allows ongoing structural damage that becomes exponentially more expensive to repair.
Which One You Probably Have
A few quick questions can narrow it down. Is the wood visibly damp, moldy, or musty? Are the creatures white and nearly invisible without magnification? You’re likely dealing with wood mites. Have you found small pellet piles near wood surfaces, mud tubes along your foundation, or hollow-sounding wood? Those point to termites.
Location matters too. Wood mites show up on firewood stacks, damp basement framing, bathroom trim, and outdoor furniture that stays wet. Termites target structural wood: floor joists, wall studs, door frames, and anywhere wood contacts or sits near soil. If the pests appeared after a period of heavy rain or a plumbing leak, and the wood in question is clearly damp, mites are the more likely culprit. If you’re seeing damage in dry, structural wood with no obvious moisture problem, termites become the primary concern.
When in doubt, collect a sample. Place a few of the pests in a sealed plastic bag and bring them to your local cooperative extension office for identification. The treatment paths are so different that confirming what you’re dealing with before spending money is always worth the effort.