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What to Do If You Find Termite Swarmers in Your House

DG
Reviewed by Derek Giordano
Licensed Pest Control Operator Β· 15+ years experience
April 28, 2026βœ“ Expert Reviewed

Swarmers Inside = Colony Inside

If termite swarmers (winged reproductives) are emerging from inside your home β€” from windowsills, door frames, baseboards, or foundation cracks β€” it means a mature colony has been living in or under your structure for at least 3–5 years. Colonies don't produce swarmers until they reach maturity, which takes thousands of workers and years of growth.

This is not an emergency that requires same-day treatment, but it does require professional assessment. The colony has been there for years β€” a few more days while you get proper quotes won't change the outcome.

Step 1: Confirm They're Termites, Not Ants

Flying ants swarm at the same time and are frequently confused with termite swarmers. The treatment for each is completely different, and panicking over flying ants wastes money.

Termite swarmers: Straight, beaded antennae. Four wings of equal length. Broad, thick waist. Wings break off easily β€” you'll find piles of shed wings.

Flying ants: Elbowed antennae. Front wings longer than rear wings. Pinched, narrow waist.

See our side-by-side identification guide with detailed visuals. If you're unsure, collect several specimens in a sealed bag for a professional to examine, or upload a photo to our AI Bug Identifier.

Step 2: Do NOT Spray Them

Spraying swarmers with Raid or any contact insecticide is pointless and potentially counterproductive. Swarmers are the reproductive caste β€” killing them does nothing to the thousands of workers damaging wood behind your walls. The colony doesn't care about lost swarmers. And spraying can contaminate the area, potentially interfering with professional treatment products applied later.

Instead, vacuum up the swarmers (they're harmless β€” they don't bite and they die within hours without moisture). Save several specimens for identification.

Step 3: Document Everything

Photograph where swarmers are emerging, any visible mud tubes on foundation walls, and any areas of damaged or hollow-sounding wood. Note the date β€” swarm season timing helps identify the termite species (eastern subterranean swarm March–May, Formosan swarm May–June, drywood swarm varies).

This documentation helps the inspector focus their assessment and provides evidence if you need to file a warranty or insurance claim.

Step 4: Get 2–3 Professional Inspections

Contact 2–3 licensed pest control companies for termite inspections. Many offer free inspections as part of their sales process. A thorough termite inspection takes 45–90 minutes and includes a written WDI/WDO report detailing findings, damage extent, and treatment recommendations.

Compare treatment options: Most companies will recommend either a liquid barrier treatment (Termidor/Taurus SC trenched around the foundation) or a bait station system (Sentricon/Advance). Both are effective; they work differently and cost differently. Our termiticide comparison breaks down the differences.

Ask about termite bonds: A retreatment warranty or repair bond protects you financially if termites return after treatment. This is often the most valuable part of the service contract.

Red flags: Any company that pressures you to sign a contract immediately, claims your house will collapse immaturely, or refuses to provide a written report before quoting treatment. Termite damage develops over years, not days β€” you have time to make an informed decision. Verify their license before scheduling.

What About DIY Termite Treatment?

DIY termite treatment is possible but comes with significant caveats. Taurus SC (same active ingredient as Termidor β€” fipronil 9.1%) is available to homeowners and costs $40–60 per bottle versus $1,500–3,000 for professional application of the same chemical. But the application requires trenching around the entire foundation, drilling through concrete in some areas, and applying 4 gallons of finished solution per 10 linear feet at the proper depth.

Mistakes in application leave gaps in the barrier that termites will find. If you're comfortable with the physical labor and precise application requirements, DIY is viable. If not, the professional treatment and warranty provide peace of mind. See our DIY termite bait guide for the bait station alternative.

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