Finding termites in furniture is distressing, especially with valuable pieces. Furniture infestations are almost always caused by drywood termites.

Signs

Frass — tiny oval fecal pellets accumulating below or around furniture. Kick-out holes — small round holes (1-2 mm) on wood surfaces. Hollow sound when tapping. Surface blistering or darkening. Swarmers or wings near furniture.

How Furniture Gets Infested

Drywood swarmers enter through cracks, joints, or unfinished surfaces. Used or antique furniture may contain colonies when purchased. Furniture in garages, attics, or sheds is particularly vulnerable.

Treatment Options

Freezing

Wrap in plastic and place in commercial freezer at 15 degrees Fahrenheit or below for 4+ days.

Heat Treatment

Heat to 120+ degrees Fahrenheit for 33+ minutes using a heat chamber.

Orange Oil

Orange oil injected into galleries kills on contact.

Boric Acid

Boric acid or borate treatments on unfinished wood surfaces.

Professional Fumigation

Fumigation chambers can treat individual items without tenting your home.

Treat vs Discard

Treat if the piece has value, infestation appears localized, and structural integrity remains. Discard if inexpensive, infestation is extensive, or the piece is structurally weakened.

Prevention

Inspect used furniture before purchase. Look for frass and tap to test. Apply borate treatments to unfinished surfaces. Store away from exterior walls.

Your Home at Risk

Infested furniture can spread drywood termites to structural wood. Schedule a home inspection if you find furniture termites. See treatment options and DIY treatment.

Protecting Valuable Furniture

If you own antiques, heirlooms, or expensive wooden furniture, proactive protection is far better than reactive treatment.

Preventive Measures

Apply borate-based wood preservatives to any unfinished wooden surfaces — the undersides of tables, inside drawers, the backs of cabinets. These treatments make the wood toxic to termites that attempt to feed on it and can provide years of protection in indoor environments.

Keep furniture away from exterior walls, particularly in rooms where you have seen evidence of drywood termite activity. Drywood swarmers entering through windows or vents are most likely to colonize wood that is closest to their entry point.

Maintain indoor humidity below 50 percent. While drywood termites can survive in relatively dry wood, lower humidity makes your home less hospitable to new colonies.

Inspection Protocol for Used Furniture

Before bringing any used or antique wooden furniture into your home, conduct a thorough inspection. Check all surfaces — especially undersides, joints, and unfinished areas — for frass, kick-out holes, wings, or visible damage. Tap the wood with a hard object and listen for hollow sounds. Examine joints and crevices with a flashlight.

If you are purchasing high-value antiques, consider having them professionally inspected before bringing them into your home. The cost of a furniture inspection is negligible compared to the cost of introducing drywood termites into your house.

Storing Furniture Safely

If you need to store wooden furniture in a garage, attic, or storage unit, protect it from termites by wrapping it or covering it to prevent swarmer access. Avoid storing wooden furniture directly on concrete floors in garages, as moisture wicking through concrete can attract both termites and wood-decay fungi. Periodically check stored furniture for signs of infestation.

The Hidden Cost of Furniture Infestations

Beyond the damage to the furniture itself, a drywood termite colony in your furniture represents a breeding ground that can spread to your home's structure. Mature colonies produce swarmers annually, and these winged reproductives can fly to window frames, door frames, attic framing, and any other exposed wood in your home to establish new colonies.

This is why a seemingly minor furniture infestation should never be ignored. A small colony in an end table may seem inconsequential, but the swarmers it produces each year are potential founders of new colonies in your home's structural wood — where the damage will be far more serious and expensive.

If you discover termites in any piece of furniture, treat or remove the item promptly, and schedule a professional inspection of your home to check whether the infestation has already spread to structural wood. Early action can prevent a furniture problem from becoming a structural catastrophe.

Furniture infestations are manageable when caught early, but they represent a real threat to your home's structural wood if ignored. Treat or remove infested furniture promptly, inspect used pieces carefully before purchase, and schedule a professional home inspection if you discover termites in any piece of furniture to ensure the infestation has not spread beyond the original item.

Do not underestimate the significance of termites in a single piece of furniture. What appears to be a minor, contained problem is actually a breeding colony capable of producing swarmers that can establish new infestations in your home's structural wood. Address furniture infestations promptly, monitor for signs of spread, and maintain the professional inspections and prevention practices that protect your entire home.

Expert Field Observations

Furniture infestations are often the entry point for drywood termites into a home's structure. In my 15 years of IPM practice, I have traced multiple whole-house drywood infestations back to a single piece of infested furniture. One homeowner in Florida purchased an antique dresser at an estate sale without inspecting it. Two years later, frass appeared on the bedroom windowsill -- a new colony, founded by swarmers from the dresser, had established itself in the window frame.

I now recommend that every piece of used wooden furniture be thoroughly inspected before it enters your home. The five minutes you spend inspecting could prevent an infestation that costs thousands to resolve.

-- Sarah Mitchell, BCE, 15 years in Integrated Pest Management

Trusted Sources and Further Reading

  • EPA Guide to Safe Pest Control -- EPA resources on managing pest infestations in household items.
  • National Pest Management Association -- Professional guidance on treating drywood termites in furniture.
  • University of Florida Entomology Department -- Research on drywood termite colonization of furniture and detection methods.
  • Clemson Cooperative Extension -- Homeowner guidance on inspecting used furniture.
  • USDA Forest Service -- Information on wood product pest management.

Main Causes

Subterranean termites reach structures by foraging from soil colonies, building protective mud tubes across foundations and over slab edges to access untreated wood. Drywood termites colonize directly through small flight cuts during seasonal swarms, settling into eaves, attic framing, and exposed structural lumber without any soil contact. Common upstream conditions include wood-to-soil contact at deck posts and porch columns, moisture-damaged framing from roof leaks or plumbing leaks, mulch piled against the foundation, firewood stacked against the house, and untreated wood within six inches of grade. Established outdoor colonies near a structure provide a constant supply of foragers, and a single mature subterranean colony contains 60,000 to several million workers capable of damaging structural wood for years before becoming visually obvious.

How to Identify

Confirm termites through mud tubes, swarmer evidence, frass, hollow-sounding wood, or direct sighting of workers and soldiers in damaged wood. Subterranean termites build pencil-width mud tubes up foundation walls, basement walls, and pier blocks — fresh tubes are moist and dark; old tubes are dry and crumbly. Discarded wings near windowsills or light fixtures after spring rains indicate a recent swarm, often from a colony already inside the structure. Drywood termites leave hexagonal pellet-shaped frass — small, six-sided, sand-grain-sized — kicked out of small holes in infested wood. Tapping suspect wood with a screwdriver handle produces a hollow sound where workers have consumed the interior, even though the exterior surface looks intact.

Risk and Severity

Termites are among the costliest residential pests in the United States, causing several billion dollars in structural damage annually with most damage not covered by standard homeowner insurance. Subterranean termites can compromise sill plates, floor joists, structural beams, and load-bearing framing over months to years, often without external visual evidence. Drywood termites damage attic framing, eaves, exposed beams, and structural lumber in older homes. Damage progresses slowly but cumulatively, and a colony left active for several years can require tens of thousands of dollars in remediation including framing replacement, treatment, and finish repair. Risk scales with how long an infestation has been active, soil moisture conditions, wood-to-soil contact, and gaps in periodic professional inspection.

Solutions and Actions

Termite control should always involve a licensed professional with appropriate state credentials, not DIY treatment, because the products and application protocols are not consumer-grade and incomplete treatment allows continued damage. Subterranean termites are typically eliminated through either a continuous liquid termiticide barrier applied around the foundation or a baiting system using monitoring stations and toxicant-loaded bait around the perimeter. Drywood termites in localized infestations are treated by spot injection of foam, dust, or borate; whole-structure infestations require structural fumigation. Schedule annual professional inspections in active termite regions because early detection dramatically reduces damage and treatment scope. Coordinate any treatment with foundation drainage improvements, wood-to-soil separation, and moisture remediation to prevent reinfestation.

Frequently Asked Questions

How do I know if my furniture has termites?

Look for frass beneath or around the piece, small round kick-out holes on wood surfaces, and hollow sounds when tapping. Surface blistering or unexplained debris are additional signs.

Can I save furniture with termites?

If the infestation is localized and the piece retains structural integrity, treatment options include orange oil, boric acid, freezing, and heat treatment. For valuable antiques, professional fumigation chambers can treat individual pieces.

Can termites in furniture spread to my house?

Yes. Mature drywood colonies in furniture produce swarmers that can colonize structural wood. Treat or remove infested furniture promptly.

When should termite-infested furniture be discarded instead of treated?

Discard furniture when the piece is inexpensive, structurally weakened, heavily tunneled, or producing frass from multiple areas that make full treatment uncertain. Valuable antiques or localized infestations may justify freezing, heat, fumigation, borates, or orange oil. Whatever you choose, isolate the item quickly so drywood swarmers do not spread to nearby structural wood.