10 Early Warning Signs of Termites & How to Stop Them Fast

Subterranean termites build mud tubes (also called shelter tubes) to travel between their underground colony and food sources. These pencil-width tubes are made of soil, wood particles, and termite saliva.

• Check foundation walls, piers, and support beams
• Look in crawl spaces, basements, and along exterior walls
• Tubes may be found on concrete, metal, or treated wood
• Break open a section—active tubes contain live termites
• Even empty tubes indicate past or present termite activity

Termite swarmers are reproductive termites that leave the colony to start new ones. Seeing swarmers indoors is a strong indication of an established infestation.

• Swarms typically occur in spring after rain (March-June)
• Formosan termites swarm at dusk near lights
• Drywood termites may swarm in late summer or fall
• Swarmers have straight antennae and equal-length wings
• Don't confuse with flying ants (ants have bent antennae, unequal wings)

After swarming, termites shed their wings near entry points. Finding piles of wings near windows, doors, or in spider webs indicates termites have entered your home.

• Wings are all the same size (unlike ant wings)
• Often found on windowsills and near light fixtures
• Wings break off easily at designed fracture points
• A few wings might be normal; many indicate a nearby colony

Termites eat wood from the inside out, leaving a thin outer shell. Tap suspicious wood with a screwdriver handle—hollow sounds indicate damage.

• Check door frames, window frames, and baseboards
• Knock on structural beams in basements and crawl spaces
• Severely damaged wood may break easily when probed
• Wood may appear normal from outside while destroyed inside

Moisture from termite activity can cause paint to bubble, peel, or appear water-damaged. This is often mistaken for water damage.

• Look for unexplained paint damage on wooden surfaces
• Check areas without obvious moisture sources
• Bubbling may indicate termites or moisture behind walls
• Professional inspection can determine the cause

Drywood termites push their droppings (called frass) out of tiny holes in the wood. These pellets look like small piles of sawdust or coffee grounds.

• Frass is six-sided and about 1mm long
• Often found beneath infested wood or furniture
• Color varies based on wood type being consumed
• Look near attics, windowsills, and wooden furniture

Termite damage can warp wood, causing windows and doors to stick. While this can have other causes, combined with other signs it's concerning.

• Doors and windows that suddenly stick may indicate termites
• Check the frame for mud tubes or damage
• Warping may be subtle—look for uneven gaps
• Rule out humidity changes and settling issues

Severe termite damage can compromise structural integrity, causing visible sagging in floors, ceilings, or rooflines.

• Buckling or sagging floors may indicate joist damage
• Ceiling sag could mean roof beam infestation
• This indicates advanced damage—act immediately
• Professional structural assessment may be needed

As termites consume wood and create moisture, frames can warp and doors may become difficult to close properly.

• Check for visible damage around the frame
• Look for mud tubes in nearby areas
• Warping concentrated in one area is suspicious
• Compare to other doors in your home

Soldier termites bang their heads against wood to signal danger to the colony. You may hear clicking sounds coming from your walls.

• Sounds are most noticeable at night when it's quiet
• Place your ear against suspicious walls
• Worker termites are also noisy eaters
• Persistent sounds warrant professional inspection

If you've identified termite activity, professional treatment is essential. Here are the proven methods: