Yes, Wood-Boring Beetles Can Seriously Damage Furniture

 

Wood-boring beetles are insects whose larvae (the immature, worm-like stage) feed on and tunnel through wood, causing destruction from the inside out. This damage can severely weaken furniture, antiques, beams, floors, or any wooden items in your home.

 

How Beetles Damage Furniture

 

The real troublemakers are not the adult beetles you may see crawling—it's their larvae, which you usually never see. Adult beetles lay tiny eggs on, or just under, the surface of wood. When those eggs hatch, the larvae immediately burrow into the wood and begin eating it. This stage can last from several months to many years, depending on the beetle type, wood, temperature, and humidity. As the larvae eat, they carve out dozens (sometimes hundreds) of small tunnels inside the wood. Over time, these tunnels make the wood weak, hollow, and brittle, even if the surface still looks decent.

 

Types of Wood-Boring Beetles That Attack Furniture

 

Several beetle species target furniture, with the most common including:

• Powderpost beetles – Often attack furniture made from hardwoods like oak, ash, or walnut. Their larvae reduce wood to a fine powder inside, leaving tiny round holes (similar to pinholes) on the surface as adults exit.
• Furniture beetles (Anobium punctatum) – Prefer softwoods but can also damage hardwoods. They create slightly larger exit holes and are common in older homes.
• Deathwatch beetles – Usually infest very old or damp wood, but can be found in antique furniture.

 

What Damage Looks Like

 

Signs your furniture could have wood-boring beetle damage include:

• Tiny round exit holes (about 1-3mm wide) on the wood surface
• Fine, powdery wood dust (called "frass") beneath or near the furniture
• Wood surfaces that are blistered or bubbling
• Weak, brittle spots—wood that feels soft or cracks easily even if the surface looks okay

Often, furniture may seem visually fine but is actually hollow or weak inside due to the beetle larvae eating away at the wood for years.

 

Risks and How Quickly Damage Can Occur

 

The rate of damage depends on beetle species, how humid your home is, and how long the infestation has been present. In some cases, a small infestation can ruin a piece of furniture in a few years. If the environment is humid (over 60% humidity), beetles breed and eat faster. Left unchecked, the bugs can transfer from one item to another, potentially spreading to built-in woodwork, floors, or beams.

 

Prevention and Treatment Tips

 

• Check all antique or secondhand wooden furniture carefully for exit holes, wood dust, or soft spots before bringing them indoors.
• Keep your home’s humidity low, as beetles thrive in moist environments. Use dehumidifiers if needed.
• If you suspect an active infestation, isolate the item to avoid beetles spreading.
• For minor infestations, specialized insecticidal sprays or freezing the item (if small enough) can work.
• For valuable or heavily infested furniture, seek professional pest control—treatment may involve fumigation or heat treatment.

If you do nothing, a beetle infestation will only get worse and can eventually destroy your furniture.