Most homeowners never see termites until it’s too late. These wood-eating insects stay hidden underground and inside your walls for years before damage shows. By the time you notice sagging floors or hollow wood, thousands in repairs may be waiting.
But termites do leave clues. Knowing what termites look like and catching the early signs can save you from costly structural damage.
What Do Termites Look Like?
Termites are small, soft-bodied insects that live in organized colonies. You’ll run into three main types, each with a different look and job.
Worker Termites
Workers make up most of the colony. They’re cream-colored, eyeless, and about 1/4 inch long. These are the ones eating your wood, but they almost never come into the open where you’d spot them.
Soldier Termites
Soldiers guard the colony. They have big heads with strong jaws and are also cream-colored. They make up only 2-5% of the colony.
Winged Swarmers (Alates)
Swarmers are the ones homeowners actually see. They’re dark brown or black with four equal-length wings. They come out during swarming season to start new colonies, then shed their wings within minutes of landing.
The Main Species in Our Area
The Eastern subterranean termite is the top structural pest in Virginia, Maryland, and DC. Colonies can hold anywhere from 20,000 to 5 million individuals.
Workers from this species are cream-colored and eyeless at roughly 1/4 inch long. They spend their whole lives underground or inside wood, which is why most homeowners never see them.
When they swarm, it usually happens between March and June on warm, humid days after rain. The winged swarmers shed their wings fast after landing, often leaving piles of papery wings as the first clue.
Formosan subterranean termites are larger and more aggressive, causing $1-2 billion in US damage yearly. They’re rare north of the Carolinas, but climate change may push them northward.
Dry-wood and damp-wood termites don’t live in most Mid-Atlantic homes. Nearly all termite problems here are subterranean, coming from underground colonies.
Warning Signs of Termites
Termites rarely show themselves, but they leave clear evidence. Here’s what to look for.
- Mud tubes: Pencil-wide earthen tunnels on foundation walls, along joists, or spanning gaps between soil and wood. Termites build these for protection while traveling between their colony and food.
- Hollow wood: Tap window sills, door frames, and baseboards with a screwdriver handle. Infested wood sounds hollow instead of solid.
- Shed wings: Small piles of same-sized papery wings near windows, doors, or lights after a swarm. This means a mature colony is nearby.
- Blistered paint, sticking doors, sagging floors: These show structural damage has already happened. The infestation is well-established by this point.
Termites vs Ants: How to Tell Them Apart
Many people mix up flying ants and termites during swarming season. Here’s how to tell the difference:
| Feature | Termites | Ants |
|---|---|---|
| Antennae | Straight, bead-like | Elbowed, bent |
| Waist | Broad, no pinch | Narrow, pinched |
| Wings | All equal length | Front wings longer |
Case Study: The Alexandria Window Sill Surprise
During my training, we visited a house in Alexandria near our company owner’s home. The homeowners had noticed a small bulge in their window sill where an addition had been built.
That tiny bulge was where termites had eaten all the way through to the paint. When we checked the crawl space, we found mud tunnels throughout and years of hidden damage far worse than anything visible from outside.
This taught me how sneaky termite infestations can be. What looked like a minor cosmetic issue was actually thousands in structural repairs that earlier detection could have prevented.
Damage and Cost
How Termites Destroy Wood
Termites prefer the softer parts of wood grain (spring growth rings) over the harder parts. They hollow out structural wood while leaving thin shells of hard wood behind. The result: wood that looks fine outside but has lost most of its strength.
The Financial Hit
Termites cause about $11 billion in US damage yearly. The average cost to treat a hidden infestation runs $1,000-$2,000, plus about $3,300 in repairs. The Mid-Atlantic sits in the second-highest termite activity zone in the country.
Don’t wait for visible damage. Professional inspections catch termite activity before it costs you.
What Attracts Termites
Certain conditions around your home make termites more likely to find their way in.
Chronic moisture is the #1 factor. Leaking pipes, clogged gutters, and poor drainage create the humid conditions termites need. HVAC units create warm, moist zones underneath them that termites use as pathways.
Earth-to-wood contact gives termites a direct route from underground to food. Common problems: mulch against siding, firewood against the foundation, deck posts touching soil directly.
Cluttered or sealed-off areas let termites feed undetected for years. Packed crawl spaces, areas under additions, and full storage rooms block the inspections that would catch early infestations.
How to Check for Termites
You don’t need special tools for a basic check. Here’s how to do a quick self-inspection.
Focus on foundation edges, areas where wood meets soil, plumbing openings, and anywhere with moisture problems. These are the most likely entry points.
Our professional termite inspections follow a 78-point checklist. Licensed technicians probe soil, check for mud tubes, test wood, and inspect crawl spaces and basements where termites often feed undetected.
Treatment Options
Sentricon Baiting System
Sentricon stations attract termites to cellulose bait treated with growth inhibitors. Termites eat the bait and share it throughout the colony. This targets the whole colony, not just the termites at your home.
Sentricon works well for prevention and early-stage problems. In my experience helping over 100 customers, it gives excellent long-term protection when properly maintained.
Liquid Soil Treatments
Liquid products create barriers in the soil around your foundation. Non-repellent formulas using fipronil or imidacloprid are undetectable to termites. They pass through treated soil and spread the chemical through the colony via food sharing and grooming.
For severe infestations, liquid treatments often work faster than bait systems. When termite numbers are very high, they sometimes don’t find bait stations fast enough to stop ongoing damage.
Here’s what termite damage looks like from the inside. Notice how they eat wood from the center out, leaving just a thin shell.
DIY termite treatments usually fail because they can’t reach the underground tunnel systems. These galleries can stretch over 200 feet from the nest and sit more than 12 inches below ground. Professional treatment addresses the whole system, not just what you can see.
Prevention
The best defense combines monitoring with habitat changes.
- Fix moisture: Repair leaks, clean gutters, improve drainage around your foundation
- Remove wood-soil contact: Keep mulch, firewood, and lumber away from the house. Maintain 6 inches between soil and wood siding
- Get annual inspections: Catch problems early when treatment is simpler and cheaper
- Consider Sentricon stations: Proactive monitoring catches colonies before they cause damage
For full prevention strategies, see our termite prevention guide.
Every month of delay increases both treatment cost and repair bills. If you see any signs of termites, call us at 703-683-2000 or email info@bettertermite.com. Our registered technicians will inspect your property and recommend the right treatment.
