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Signs of Termites: Options and Treatment Costs 2026

If you’ve seen flying termites in or around your home in May or June, that’s a swarm event—and it requires immediate evaluation.

Swarms are alarming, but with a quick inspection and the right treatment, you can stop an active colony and prevent costly structural damage. Termites cause billions in property damage annually in the U.S., yet most homeowners can resolve an infestation within a few weeks when they act fast.

Termite swarm or flying ants? Here’s how to tell

First, confirm what you’re seeing. Swarming termites (alates) emerge seasonally—often after warm rains in spring and early summer—seeking new places to start colonies. Flying ants also swarm, but their bodies look different up close.

Key visual differences to check in good light or with a phone macro photo:

  • Waist shape: Termites have a straight, uniform “waist.” Flying ants have a pinched, hourglass waist.
  • Antennae: Termite antennae are straight and beaded. Ant antennae are bent (elbowed).
  • Wings: Termites have two pairs of equal-length wings that extend past the abdomen; they’re fragile and often shed in piles on windowsills. Ants’ front wings are larger than hind wings.
  • Color/shape: Termites are generally pale to dark brown with a cigar-shaped body. Ants are usually darker with a distinctly segmented body.
  • Behavior: Termite swarmers often gather at lights/windows and shed wings; you’ll find neat piles of translucent wings. Ants typically don’t leave uniform wing piles.

If you find mud tubes on foundations, soft or hollow-sounding wood, blistered paint, or “frass” (pellet-like droppings typical of drywood termites), call a pro. Save any insects or wings in a baggie and snap close-up photos; identification guides from your state extension can help, but a licensed inspector will confirm on site.

What to do in the first 24 hours

Don’t panic—and don’t spray over-the-counter insecticides on visible swarmers. Sprays can scatter insects without addressing the colony. Instead:

  • Photograph the insects, wings, and any mud tubes or damaged wood.
  • Collect a few specimens for ID (a small jar or tape works).
  • Check for moisture problems: leaking hose bibs, poor gutter drainage, or earth-to-wood contact around the foundation.
  • Call a licensed termite specialist for a free inspection and written estimate the same week.

Rapid evaluation matters—subterranean colonies can forage 100+ feet. The sooner you treat, the less invasive and less expensive the fix usually is.

Treatment options that work in 2026

Termite control is not one-size-fits-all. The right approach depends on species (subterranean vs. drywood), construction type, and moisture conditions. Here are the three main treatments and typical 2026 costs.

1) Liquid soil barrier (non-repellent termiticide)

Best for: Subterranean termites (the most common in humid markets). Pros trench and/or rod-inject a non-repellent termiticide like fipronil or imidacloprid around the home’s perimeter and interior entry points (slab joints, plumbing penetrations). The chemical binds to soil and is transferred among termites, eliminating the colony pressure and creating a long-lasting treated zone.

What it costs in 2026: Typically $4–$12 per linear foot of foundation, with whole-home jobs commonly $1,200–$3,500 for average-sized homes; complex or large properties can run $4,000–$6,500+. Pricing varies with footage, drilling needs, and soil type.

Pros: Immediate protection and multi-year residual; good for heavy pressure sites. Cons: Requires drilling/trenching; follow-up inspections still needed.

2) Bait station systems (e.g., Sentricon, Trelona)

Best for: Subterranean termites where long-term monitoring is desired, or where trenching is impractical. Pros install in-ground stations around the perimeter; termites feed on a growth regulator that’s taken back to the colony.

What it costs in 2026: Installation typically $900–$2,500 for most lots, depending on station count and brand. Ongoing monitoring/service plans usually $250–$500 per year. Many providers include retreatment at no added cost while you’re on plan.

Pros: Less invasive to landscaping; continuous monitoring. Cons: Results build over weeks; requires staying current on service visits.

3) Whole-structure fumigation (tenting)

Best for: Drywood termite infestations that are spread throughout inaccessible wood (attics, roof voids, finished walls). A licensed crew encloses the structure and releases a gas fumigant that penetrates wood and eradicates drywood colonies inside the envelope.

What it costs in 2026: Commonly $2,500–$8,500+ depending on cubic footage, stories, and complexity (multi-units and large homes higher). Note: fumigation does not prevent re-infestation; many homeowners pair it with localized treatments, sealing, and annual inspections in humid regions.

Pros: Whole-structure reach; ideal for widespread drywood colonies. Cons: Temporary move-out required; no residual protection.

What a professional inspection includes

A licensed inspector will examine the foundation, crawlspace or slab edges, attic and accessible framing, door/window trim, plumbing penetrations, garages, decks, and landscaping near the structure. You’ll get a diagram noting conducive conditions (moisture, wood-to-soil contact), any active or prior activity, and a written proposal with treatment scope and warranty terms.

Orkin vs. Terminix vs. Rentokil: contracts, warranties, and monitoring

National providers have similar frameworks but different names and limits. Always read the service agreement for your address—coverage varies by state and structure.

  • Orkin: Offers liquid and bait options with an inspection-based custom plan. Typical contracts include a re-treatment warranty while you maintain coverage; some markets offer repair guarantees as an add-on or within certain plans. Annual monitoring generally includes a full inspection, station checks (if applicable), and documentation. Terms and damage caps vary by location—confirm in writing.
  • Terminix: The Nix Termite Guarantee provides re-treatment while on plan; select plans in eligible areas include the Nix & Fix repair guarantee (limits apply; often up to a stated cap). Annual monitoring covers inspections and bait station service if installed. Verify whether drywood treatments and re-inspections are included in your market.
  • Rentokil (including Ehrlich/Western/Presto-X): Provides liquid and bait systems with a re-treatment warranty while under contract; some branches offer repair coverage as a separate bond with defined limits. Monitoring plans typically include scheduled station checks, perimeter assessments, and written reports.

Contract term: Commonly 12 months with auto-renewal. Annual monitoring: Expect 1–4 service visits depending on method (bait systems more frequent), plus on-call re-treatments if activity is detected. Typical annual costs in 2026: $150–$400 for liquid re-inspection/bond; $250–$500 for bait monitoring.

Tip: Ask for the warranty’s exact language on: (1) what counts as “new damage,” (2) repair dollar cap and exclusions (floors, plumbing, fencing), (3) missed-service penalties, and (4) transferability if you sell the home.

How much should you budget?

  • Initial treatment (most homes): $1,200–$3,500 for liquid or bait; complex sites higher.
  • Drywood fumigation: $2,500–$8,500+ depending on size and prep.
  • Annual monitoring/bond: $150–$500 depending on method and market.

Get at least two to three written bids with diagrams so you can compare scope, chemical/bait brand, and warranty length/limits side by side—not just the headline price.

Homeowners insurance and termite damage

Standard homeowners (HO-3/HO-5) policies almost never cover termite damage. Insurers consider termite activity a preventable maintenance issue, not a sudden, accidental loss. You may see coverage only if insect damage directly causes a sudden collapse and your policy includes a collapse endorsement that does not exclude insects—this is uncommon and tightly defined. If a covered peril (like a fire) occurs, repairs address all resulting damage, but the termite damage itself isn’t a covered cause of loss.

Check your declarations and exclusions, then budget for prevention: professional inspections, moisture control, and a bond or monitoring plan. For clarity, see guidance from the Insurance Information Institute and the U.S. EPA on termite prevention.

Sources and further reading

Act fast: get a free termite inspection

A swarm in May or June is a flashing red light—address it now, and you’ll likely contain both damage and cost. Connect with a licensed exterminator near you for a free, same-week inspection and a written plan.

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