Signs of Termites: 9 Warning Signs You Should Never Ignore
Written by: MidSouth Termite & Pest Control Team
Serving Columbia, SC since 2004
4.8-star rated pest control professionals
The most serious signs of termites are often the easiest to miss. Termites work behind walls, beneath floors, and inside structural wood. Sometimes for months before homeowners realize there’s damage. Knowing the early signs of termites can help you prevent expensive repairs and protect your home’s structure.
What Are the Most Common Signs of Termites?
The most common signs of termites include:
Mud tubes on foundation walls
Hollow-sounding wood
Discarded wings
Bubbling or peeling paint
Tight-fitting doors and windows
Termite droppings (frass)
Soft or sagging flooring
Clicking sounds in walls
Swarms of flying termites
If you notice one or more of these signs of termites, further inspection is recommended.
9 Signs of Termites You Should Check For
1) Mud Tubes Along the Foundation
One of the clearest signs of termites is pencil-width mud tubes running along foundation walls, crawlspaces, or brick surfaces. Subterranean termites build these tunnels to protect themselves from air and maintain moisture while traveling between the soil and your home.
Homes with excess moisture in crawlspaces are especially vulnerable to termite activity.
If you see mud tubes, don’t break them open immediately. They help professionals confirm active activity during inspection.
2) Hollow or Papery-Sounding Wood
Termites consume wood from the inside out. Structural beams, trim, and framing can appear normal on the surface while being hollow inside.
Gently tapping suspected areas may produce a thin, papery sound. This is one of the more serious signs of termites because it often indicates advanced feeding.
3) Discarded Wings Near Windows or Doors
During swarming season (typically spring if you’re in South Carolina), reproductive termites leave their colony to form new ones. After landing, they shed their wings.
Finding small, translucent wings near windowsills or door frames is a major early warning sign of termites. They are often confused with flying ants, but termites have straight antennae and equal-length wings.
If you're unsure whether you're seeing termites or ants, proper identification is critical before treatment begins.
4) Bubbling or Peeling Paint
Bubbling or peeling paint can resemble water damage, but it may also signal termite activity beneath the surface. As termites tunnel through wood and drywall, moisture builds and causes finishes to distort.
Addressing underlying moisture issues [link to Waterproofing Solutions page] can significantly reduce long-term termite risk.
When paint irregularities appear without obvious leaks, termite inspection is worth considering.
5) Doors or Windows That Suddenly Stick
Wood that absorbs moisture from termite activity may swell and warp. If doors or windows suddenly become difficult to open, and humidity alone doesn’t explain it, this could be one of the hidden signs of termites.
This symptom alone doesn’t confirm infestation. But combined with other indicators, it’s worth investigating.
6) Termite Droppings (Frass)
Drywood termites leave behind small pellet-like droppings called frass. These six-sided granules often resemble sawdust or coffee grounds and may appear near baseboards or window frames.
Unlike carpenter ants, termites don’t eject wood shavings. Frass is a distinct waste product and a strong sign of termite presence.
7) Soft or Sagging Floors
Termite damage to floor joists and subflooring can cause soft spots or sagging. This is a structural concern and one of the more advanced signs of termites.
If flooring feels unstable, it’s important to schedule a professional inspection promptly.
8) Faint Clicking Sounds Inside Walls
In heavier infestations, soldier termites may bang their heads against tunnel walls to signal danger. This can create faint clicking sounds inside walls.
While less common, this behavior is documented and considered one of the more unusual signs of termites.
9) Swarms of Flying Termites Indoors
Seeing a swarm inside your home is a serious warning sign. Swarming termites indoors often indicate a mature colony already established within the structure.
Catching this early can significantly reduce long-term damage.
Why Early Signs of Termites Matter
Termite colonies can contain hundreds of thousands, sometimes millions, of insects feeding continuously. So catching the early signs of termites can prevent thousands of dollars in structural repairs.
Most standard homeowners insurance policies do not cover termite damage. Early detection and professional termite control services are almost always less expensive than structural repairs.
What To Do If You Notice Signs of Termites
If you notice signs of termites:
Do not disturb mud tubes.
Do not rely solely on over-the-counter sprays.
Document visible areas.
Schedule a professional termite inspection.
DIY treatments rarely eliminate the entire colony. Effective control requires locating the source and applying professional-grade treatment based on termite species and activity level.
Protect Your Home Before Damage Spreads
Understanding the signs of termites is the first step. Acting quickly is the second. If you suspect termite activity in Columbia, SC or the surrounding areas, a professional inspection can confirm the issue and prevent further structural damage.
If you suspect termite activity, call MidSouth Termite & Pest Control, Inc. now for a FREE estimate. The sooner you act, the easier the damage is to control.