Flying termites inside your home signal an active, mature colony that has been feeding on wood for years, typically three to five years or more before a colony produces swarmers. Killing the visible fliers is straightforward, but the swarmers themselves aren’t the real problem. They’re a symptom. Getting rid of flying termites permanently means eliminating the colony they came from and preventing new ones from establishing.
Make Sure They’re Actually Termites
Flying ants swarm at the same time of year and look similar at first glance, but the treatment is completely different. Here’s how to tell them apart:
- Waist: Flying ants have a pinched, narrow “wasp waist.” Termite swarmers have a straight, thick body with no visible waist.
- Wings: Termite swarmers have four wings that are all the same length, pale, and translucent. Flying ants have front wings noticeably longer than the back pair.
- Antennae: Termite antennae are straight. Ant antennae are bent or elbowed.
If you can catch one on a piece of tape or in a jar, the wing and waist differences are easy to spot, even without magnification.
Kill the Swarmers You Can See
The flying termites inside your house are short-lived. Most will die within hours once their wings break off. But if there are dozens or hundreds buzzing around your lights, here’s how to deal with them immediately.
A vacuum cleaner is the fastest option. Suck them up and dispose of the bag or canister contents in a sealed bag outside. You can also fill a spray bottle with water and a few drops of dish soap. The soapy water coats their wings and bodies, suffocating them on contact. It won’t harm surfaces and works well for clusters on windowsills.
Turn off as many lights as possible, especially near windows and doors. Flying termites are strongly attracted to light sources, and leaving a porch light on during a swarm is essentially an invitation. If you want to draw them to one spot, place a single lamp over a shallow pan of soapy water. They’ll fly toward the light, hit the water, and drown.
Seal gaps around windows, doors, and vents to stop more from entering. Even small cracks are enough for swarmers to squeeze through.
What Indoor Swarmers Tell You
Swarming typically happens during the daytime in spring, often right after a rainstorm when humidity is high. Seeing swarmers outside near your yard doesn’t necessarily mean your home is infested. They could be coming from a neighboring property or a dead tree stump.
Finding them inside your house is a different story. Indoor swarmers almost always mean a colony is living in or directly under your home. The colony has been there long enough to mature and reproduce, which means structural damage may already be significant. This is not a situation where killing the visible swarmers solves the problem.
Treating a Subterranean Termite Colony
Subterranean termites are the most common type in the United States. They live in the soil and build mud tubes to reach the wood in your home. Two primary treatment approaches target them.
Liquid soil treatments involve trenching around your foundation and applying a non-repellent termiticide to the soil. Non-repellent products are key because termites can’t detect them. Workers walk through the treated soil, pick up the chemical, and carry it back to the colony, spreading it to other termites through normal contact. This chain reaction can collapse an entire colony over weeks. These treatments are almost always applied by licensed professionals because they require specialized equipment, precise application, and knowledge of your home’s construction.
Baiting systems use stations installed in the ground around your home’s perimeter. Termites find the bait, feed on it, and share it with nestmates. The active ingredient disrupts their ability to molt, which eventually kills the colony. Bait systems work more slowly than liquid treatments but are effective for long-term monitoring and can catch new colonies before they cause damage.
Treating a Drywood Termite Colony
Drywood termites don’t need soil contact. They live entirely inside the wood they eat, getting all the moisture they need from the wood itself. This makes them harder to detect and treat differently than subterranean species.
For localized infestations where you can pinpoint the damaged wood, a pest professional can drill into the timber and inject pesticide directly into the termite galleries. If the infested wood is accessible, removing and replacing it entirely is another option. Orange oil is also used for localized drywood treatments by professionals, applied directly to infested wood.
When a drywood infestation is widespread or hard to locate precisely, tent fumigation is the most reliable method. The entire structure is sealed under tarps and filled with a gas that penetrates all the wood in the home. Research from Texas A&M University has shown that only fumigation at the proper concentration reliably kills all termites in a structure. The downside: fumigation provides no residual protection, so reinfestation is possible afterward without preventive measures.
Surface treatments with borates can help prevent new drywood infestations on exposed wood but won’t reach termites already living deep inside structural timbers.
Do DIY and Natural Treatments Work?
Essential oils have shown genuine insecticidal effects on termites in controlled testing. A study from the University of California found that wintergreen oil killed individual drywood termites faster than other essential oils tested, and it’s safe around people and pets. When researchers combined wintergreen oil with heat treatment in an infested home, they achieved 92% to 100% termite mortality in treated wood blocks, compared to only 36% to 44% mortality from heat alone in areas near concrete foundation walls where temperatures are hardest to raise.
The catch is scale. Applying drops of essential oil to a wood block in a study is very different from treating an entire house. Termites can survive in hard-to-reach areas, like wood positioned against concrete foundations, where neither heat nor topical treatments penetrate well. For a small, accessible drywood infestation you’ve clearly identified, localized treatments can work. For anything larger or less defined, professional treatment is the realistic path to full elimination.
Boric acid, sold as a powder or dissolved in water, does kill termites on contact and through ingestion. It’s useful as a preventive treatment on exposed wood in attics or crawl spaces. But like borates, it can’t reach termites already tunneled deep inside your framing.
Preventing New Colonies From Establishing
After dealing with the immediate infestation, prevention determines whether you’ll face the same problem again. Most prevention centers on eliminating moisture and removing easy access points between soil and wood.
Maintain at least 6 inches of clearance between the soil and the lower edge of your siding. This gap makes it harder for subterranean termites to bridge from the ground into your home undetected. Don’t pile mulch, leaves, or pine straw against the foundation, as any organic material touching your home’s wood or siding creates a direct entry point.
Moisture is the single biggest attractant. Fix leaky faucets and outdoor spigots promptly. Redirect gutter downspouts so water discharges well away from the foundation rather than pooling against it. Make sure air conditioner condensation lines don’t drip onto the soil next to your home. Poor drainage that allows water to sit against the foundation can also break down existing soil termiticide treatments, leaving gaps in your protection.
During swarming season in spring, keep outdoor lights off when possible in the evening, and make sure window and door screens are intact and tight-fitting. Swarmers that can’t get inside your home are far less likely to start a colony in your walls.
If you had a professional liquid treatment applied, avoid disturbing the treated soil band around your foundation. Digging, excessive watering, or landscaping activity in that zone can wash away or dilute the termiticide, creating openings for new colonies to exploit.