Moisture, mold & pests

Winged termites (swarmers) seen indoors

A swarm of winged insects indoors, especially near windows in spring, is often a strong sign of an active termite colony inside or very near the house.

Difficulty
Professional only
Time
15–30 minutes to document
DIY cost
$0
Pro cost
$75–$150 for inspection; $500–$3000+ for treatment

Symptoms

  • Winged insects appearing suddenly indoors, often near a window or light source
  • Discarded, uniform-sized wings left in small piles afterward
  • Insects with straight antennae and a thick waist (versus flying ants, which have bent antennae and a pinched waist)

Likely causes

  • CommonMature termite colony releasing reproductive swarmersColonies periodically send out winged termites to start new colonies, and this is often the first visible sign of an infestation.
  • PossibleFlying ants mistaken for termitesFlying ants look similar at a glance but have different body and wing shapes and don't indicate termites.

What to do

  1. Look closely at a captured or dead specimen (or a clear photo) to check antennae shape and waist thickness to distinguish termites from flying ants.
  2. Collect a few specimens in a sealed bag or container for a pest professional to positively identify.
  3. Note where indoors the swarmers appeared, since that's often close to where the colony is active.
  4. Avoid vacuuming or cleaning up all evidence immediately if you want a professional identification first.
  5. Check nearby wood, baseboards, or window frames for other termite signs like mud tubes or damaged wood.
  6. Schedule a professional termite inspection promptly, since indoor swarmers are a strong indicator of an active nearby colony.
  7. Follow the recommended treatment plan from a licensed pest control company.

Tools and parts

  • Sealed container or bag
  • Flashlight

When to call a pro

Call a licensed pest control company promptly for identification and treatment.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

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