The short version
Most termite problems in Alexandria are eastern subterranean termites, and the usual fix is a liquid soil treatment or bait stations. Start with an inspection; $75–$250 is typical.
- Look for mud tubes, shed wings and hollow-sounding wood.
- Swarms usually show up from April through May.
- The usual fix is a soil barrier or bait stations.
- An inspection typically costs $75–$250.
- Insurance usually doesn’t cover termite damage.
Homeowners, landlords and anyone buying or selling a house in Alexandria, whether you've spotted something or just want to know what to watch for.
What to look for
Termites work quietly. A colony can feed inside a wall for years. Average winter lows near 28°F slow termites near the surface around Alexandria, but they move deeper and keep feeding under heated homes. Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs.
- 1Screwdriver sinks easily into sills or trim.
- 2Termite tubes hanging down from ceilings or joists.
- 3Layered, honeycombed wood packed with soil.
- 4Winged swarmers indoors, especially in spring.
- 5Mud tubes running up foundation walls or piers.
- 6Tiny pinholes in drywall rimmed with mud.
Why it’s worth acting soon
- Colonies grow and spread every year they go untreated.
- Damage hides behind drywall, flooring and trim.
- Homeowners insurance usually doesn’t cover termite damage.
- An active infestation can complicate a home sale.
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Termite activity through the year in Alexandria
Spring
swarm season. Around Alexandria, expect it from April through May. Check windowsills and light fixtures for wings.
Summer
with highs around 88°F in Alexandria, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
Fall
with about 42 inches of rain a year in Alexandria, make sure gutters and downspouts carry water well away from the foundation.
Winter
a good time to book an inspection in Alexandria, before swarm season starts.
Treatment options and typical costs
Termite Inspection and WDI Report
$75–$250
The inspector checks the foundation, garage, attic and damp spots. Bring up anything you’ve noticed.
- Time
- 60–120 minutes
- Best for
- Every job, real estate closings, and yearly peace of mind
Bait Station System with Monitoring
$1,500–$3,500 install, plus $300–$500 per year
Instead of a chemical barrier, baiting in Alexandria removes the colony itself. Stations are checked on a schedule, commonly quarterly, and refilled.
- Time
- 2–4 hours to install; checked quarterly
- Best for
- Colony elimination, wells and slabs, homes near water
Liquid Soil Termiticide Barrier
$1,200–$3,500 (often $3–$16 per linear foot)
A soil barrier stops termites from reaching wood through the ground. For most Alexandria homes with active subterranean termites, this is the fastest way to end feeding.
- Time
- Half a day to a full day
- Best for
- Active subterranean termites; fast knockdown around the foundation
Fumigation for Drywood Termites
$1,200–$4,000 (often $1–$4 per square foot)
Tenting is mainly for drywood termites. Most homes here never need it.
- Time
- 2–3 days including tenting and aeration
- Best for
- Widespread drywood termites throughout a structure
Prices are typical published ranges. Ask what’s included before you compare quotes.
Check under the kitchen sink for dampness and soft cabinet wood. Plumbing walls are a common path for termites coming up from a slab.How treatment works on a typical Alexandria home.
With a crawl space, the crew treats soil outside and underneath. They also treat around piers and plumbing. Fix any moisture under the house too. Bait stations are the other main option. They're spaced every 10 to 20 feet. Termites carry the bait back to the colony. The stations are checked on a schedule, often every few months.
Which termites live around Alexandria.
It needs steady moisture. It nests in soil and builds mud tubes to reach wood. The termite you're most likely to meet in Alexandria is the eastern subterranean termite.
Sealing the gap where pipes enter the house takes away one of the easiest routes in. It won't replace treatment, but it helps.When termites swarm here.
Save a few in a bag, or snap a clear photo. A swarm inside usually means it's in the house. A swarm outside means a colony is nearby. Around Alexandria, eastern subterranean termites usually swarm from April through May, typically on a warm, sunny day after rain. Swarm season is when termites show themselves.
Where to look around your house.
The same advice applies across the area, from Alexandria out to Manassas and Leesburg. Standing water or a musty smell needs fixing either way. Check the piers, the sill plate and the floor joists. Take a flashlight underneath. A lot of houses around Alexandria are built over crawl spaces, and that's usually where termites start.
A year of termites in Alexandria.
- Spring: swarm season. Around Alexandria, expect it from April through May. Check windowsills and light fixtures for wings. - Summer: with highs around 88°F in Alexandria, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs. - Fall: with about 42 inches of rain a year in Alexandria, make sure gutters and downspouts carry water well away from the foundation. - Winter: a good time to book an inspection in Alexandria, before swarm season starts.
What happens at an inspection.
Most inspections take an hour or two. The inspector walks the outside of the house first. They check the foundation, the soil line and nearby wood. Inside, they check the garage, baseboards, plumbing gaps and the attic. They'll also go into the crawl space. A moisture meter and a probe help them find hidden activity. Afterward, ask them to show you what they found. Photos help.
Termites or ants?
- Tunnels: termite galleries are packed with mud. Ant tunnels are clean and smooth. - Debris: termites leave mud. Carpenter ants leave sawdust. - Antennae: termite antennae are straight. Ant antennae bend like an elbow. - Waist: termites are thick through the middle. Ants are pinched. - Wings: termite wings are all the same length. Ant wings aren’t.
Getting ready for treatment day.
Prep is light for liquid treatments and bait stations. Clear a walking path along the exterior walls. Move boxes away from garage walls. Flag sprinkler heads and buried lines. Keep kids and pets inside while the Alexandria crew applies the product, and ask how long to stay off treated soil. In Virginia, eastern subterranean swarms February–June in the mid-Atlantic (Penn State/UGA). Drill holes in slabs or patios get patched afterward.
Mulch and termites.
Pull mulch back from the foundation and keep the layer thin. A dry gap along the house makes mud tubes easier to spot; in Alexandria that means extending downspouts and pulling mulch back from the slab. Wood chips touching the siding trap the moisture termites are after.
Questions to ask before you sign.
- What do I need to do before and after treatment? - What does the yearly renewal cost? - What does the warranty cover, and for how long? - Is the whole foundation treated, or just one spot? - What product or system will you use? - Which termites did you find, and where?
What affects the price
- Wells, drains, or water features limiting chemical use.
- Annual renewal and monitoring fees.
- Whole-house fumigation versus spot treatment.
- Slab, crawl space, or basement construction.
- Species: subterranean, drywood, or Formosan.
- Access to crawl spaces and attics.
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What's your biggest concern about termites?
When to call for help
Call if you see mud tubes, pellets or an indoor swarm. Hollow-sounding wood is another clue. Buying or selling? Get a wood-destroying insect (WDI) report either way. Lenders often ask for one. It's also the cheapest termite service. Carpenter ants leave clean tunnels and sawdust. Termites leave mud.
What you can do yourself
Treating an active colony is harder. The product has to reach the whole colony. It also needs even coverage around the entire foundation. Store-bought sprays usually kill only the termites you see. Some of the work is yours. Pull mulch back from the foundation. Fix leaks and clear gutters. Keep firewood away from the house.
Termites in Alexandria
A local provider who knows Alexandria and Virginia can point out the specific conditions that matter most here before you commit to a plan. Around Alexandria, take a minute to note where you have seen activity and when it appears, so the inspection is faster and the quote more accurate. Around Alexandria, most of the housing is urban, so the usual entry points, moisture spots, and sheltered areas near the structure are what an inspection checks first. Alexandria has a humid subtropical climate, and termites activity here tends to pick up spring swarm season (March-May), warmer earlier in the south. A typical home in Alexandria is worth around $630k, which puts a few hundred dollars for an inspection and prevention in perspective. With summer highs around 88°F, Alexandria's humid subtropical climate decides when local termites are busiest. Most houses will see termites at some point. Termite activity in Virginia is above average. About 42 inches of rain a year in Alexandria is plenty for subterranean termites, especially on any side of the house kept damp by gutters or sprinklers.
Local research
Termites in Alexandria, VA: what the public record shows
Before you compare quotes, it helps to know which termites actually live in Virginia, when they are busiest around Alexandria, and what the state figures look like. Everything below links to the agency or university page it came from.
Termite species recorded in Virginia
- Eastern subterranean termite (Reticulitermes flavipes) — UGA calls it 'the most widely distributed subterranean termite, and it is the most common termite found in the eastern United States'; it swarms February through April in Georgi…
- Formosan subterranean termite (Coptotermes formosanus) — FDACS lists it in Florida, Alabama, Georgia, Louisiana, Mississippi, South Carolina, North Carolina, Tennessee, Virginia, Texas, Arizona, California and Hawaii. Colonies contain…
- Dark and light southeastern subterranean termites (Reticulitermes virginicus; Reticulitermes hageni) — UGA: both are 'generally less economically important when compared to R. flavipes'; R. virginicus swarms April–June and R. hageni July–September. Part of the Reticulitermes comp…
When termites are busiest around Alexandria
Eastern subterranean swarms February–June in the mid-Atlantic (Penn State/UGA).
FDACS lists Virginia among Formosan states and UF/IFAS notes Formosan reports 'as far north as Virginia'. The eastern subterranean termite is the dominant species across the eastern US (UGA).
Sources: Biology of Subterranean Termites in the Eastern United States (B1209); University of Missouri Extension; Formosan Termite Program. Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Seal cracks in the foundation and slab.
- Paint or seal exposed exterior wood.
- Keep the termite renewal contract current after treatment.
- Ventilate crawl spaces and control humidity.
- Extend downspouts so water drains away from walls.
- Trim shrubs so foundation walls stay visible and dry.
Keep the inspection diagram, treatment record and warranty together. Buyers and inspectors will ask for them later.Did you know?
Around Alexandria, when danger shows up, soldier termites bang their heads against the tunnel walls to warn the colony.
Around Alexandria, termites have been chewing wood for well over 100 million years, since the age of the dinosaurs.
Questions people ask
What does a WDI report include?
It only covers areas the inspector could reach. It also notes conditions that invite them, like wood touching soil. It lists any termites or damage found.
Do I have to leave my house during termite treatment?
Everyone leaves for two to three days, pets and houseplants included. Fumigation is different. Not for a soil treatment or bait stations.
What is the difference between subterranean and drywood termites?
Around Alexandria, the subterranean kind causes most problems. Drywood termites live inside the wood and leave tiny pellets. Subterranean termites live in soil and build mud tubes.
How do I choose a termite company?
Compare the proposals, not just the totals. Ask what the warranty covers. Ask which termites they found and what product they'll use. Make sure they're licensed in Virginia.
Can I pay for termite monitoring without a full treatment?
Around Alexandria, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. Around Alexandria, a professional inspection looks for mud tubes, damaged wood, and swarming activity, and treatment targets the soil and the colony rather than just the visible wood.
Can you treat for termites before building a house?
Yes, and most termite companies offer it. Around Alexandria, anyone planning a build can usually find a termite pre-treatment locally: 79% of locations responding to PCT magazine's 2025 termite market report (about 145 pest-control professionals, 2024 operations) offered it.
Are termites common in Virginia?
Around Alexandria, the usual culprit is the eastern subterranean termite.
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Sources (11)
The facts in this article come from the public sources listed above. Every home is different, so ask the company you talk to about pricing and what’s included. Published by Termite Exterminator · Updated September 11, 2026 · How we write these guides