The short version
Most termite problems in Columbia 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 March 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.
Anyone in Columbia who owns, rents out, or is buying a home and wants to know whether termites are a real concern.
What to look for
Spongy floors or bubbling paint usually mean long-running damage. So it's worth an inspection, even for one or two signs. Termites work quietly. A colony can feed inside a wall for years. Average winter lows near 35°F slow termites near the surface around Columbia, but they move deeper and keep feeding under heated homes.
- 1Mud tubes running up foundation walls or piers.
- 2Screwdriver sinks easily into sills or trim.
- 3Piles of identical shed wings on windowsills.
- 4Doors and windows that suddenly stick.
- 5Mud in cracks of subfloor or joists.
- 6Wood that sounds hollow when tapped.
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 Columbia
Spring
swarm season. Around Columbia, expect it from March through May. Check windowsills and light fixtures for wings.
Summer
with highs around 93°F in Columbia, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
Fall
with about 47 inches of rain a year in Columbia, make sure gutters and downspouts carry water well away from the foundation.
Winter
a good time to book an inspection in Columbia, 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
Annual Renewal and Monitoring
$150–$400 per year
Renewal fees are small next to a second full treatment. For Columbia homeowners, the visit usually includes a walk-around, a crawl space check, and a bait station service.
- Time
- 30–60 minutes per visit
- Best for
- Keeping a treated home protected after the initial job
Bait Station System with Monitoring
$1,500–$3,500 install, plus $300–$500 per year
Each station holds cellulose bait laced with a chitin synthesis inhibitor. Workers around a Columbia home share it, cannot molt, and the colony dies over weeks to months.
- Time
- 2–4 hours to install; checked quarterly
- Best for
- Colony elimination, wells and slabs, homes near water
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.
Crawl spaces are where termites usually get in. Joists, piers and the sill plate should all get a close look.How treatment works on a typical Columbia home.
With a crawl space, the crew treats soil outside and underneath. The stations are checked on a schedule, often every few months. Termites carry the bait back to the colony. They're spaced every 10 to 20 feet. Bait stations are the other main option. Fix any moisture under the house too. They also treat around piers and plumbing.
Which termites live around Columbia.
The termite you're most likely to meet in Columbia is the eastern subterranean termite. It needs steady moisture. It nests in soil and builds mud tubes to reach wood.
Subterranean termites don't stop in winter; they just go deeper. A quiet season is a good time for a non-urgent inspection.When termites swarm here.
A swarm outside means a colony is nearby. Around Columbia, eastern subterranean termites usually swarm from March through May, typically on a warm, sunny day after rain. Swarm season is when termites show themselves. Save a few in a bag, or snap a clear photo. A swarm inside usually means it's in the house.
Where to look around your house.
Check the piers, the sill plate and the floor joists. Take a flashlight underneath. A lot of houses around Columbia are built over crawl spaces, and that's usually where termites start. The same advice applies across the area, from Columbia out to Sumter. Standing water or a musty smell needs fixing either way.
A year of termites in Columbia.
- Spring: swarm season. Around Columbia, expect it from March through May. Check windowsills and light fixtures for wings. - Winter: a good time to book an inspection in Columbia, before swarm season starts. - Fall: with about 47 inches of rain a year in Columbia, make sure gutters and downspouts carry water well away from the foundation. - Summer: with highs around 93°F in Columbia, termites follow moisture, so watch AC drain lines, sprinkler zones and hose bibs.
What happens at an inspection.
Inside, they check the garage, baseboards, plumbing gaps and the attic. They check the foundation, the soil line and nearby wood. The inspector walks the outside of the house first. Most inspections take an hour or two. Photos help. Afterward, ask them to show you what they found. A moisture meter and a probe help them find hidden activity. They'll also go into the crawl space.
Termites or ants?
- Waist: termites are thick through the middle. Ants are pinched. - Wings: termite wings are all the same length. Ant wings aren’t. - 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.
Getting ready for treatment day.
Move boxes away from garage walls. Clear a walking path along the exterior walls. Prep is light for liquid treatments and bait stations. Drill holes in slabs or patios get patched afterward. Keep kids and pets inside while the Columbia crew applies the product, and ask how long to stay off treated soil. In South Carolina, native subterranean species swarm in early spring, often in the afternoon; Formosan swarms mid-May to July, often in the evening, attracted to lights (Clemson). Flag sprinkler heads and buried lines.
Mulch and termites.
A dry gap along the house makes mud tubes easier to spot; in Columbia that means extending downspouts and pulling mulch back from the slab. Pull mulch back from the foundation and keep the layer thin. Wood chips touching the siding trap the moisture termites are after.
Questions to ask before you sign.
- What product or system will you use? - Which termites did you find, and where? - 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 affects the price
- Whole-house fumigation versus spot treatment.
- Number of bait stations required.
- Liquid barrier versus bait station system.
- Local labor rates and licensing requirements.
- Wells, drains, or water features limiting chemical use.
- Species: subterranean, drywood, or Formosan.
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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
Some of the work is yours. Pull mulch back from the foundation. Fix leaks and clear gutters. Keep firewood away from the house. 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.
Termites in Columbia
Columbia has a humid subtropical climate, and termites activity here tends to pick up spring swarm season (March-May), warmer earlier in the south. Around Columbia, 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. Around Columbia, take a minute to note where you have seen activity and when it appears, so the inspection is faster and the quote more accurate. A local provider who knows Columbia and South Carolina can point out the specific conditions that matter most here before you commit to a plan. Around Columbia, before you book, ask whether the inspection is included, what the treatment plan covers, how many visits to expect, and what the written quote includes. Around Columbia, getting the scope, the prep steps, and any follow-up terms in writing makes it much easier to compare providers fairly, and a good provider will walk you through each of these without pressure. Columbia gets about 47 inches of rain a year, and average humidity sits near 70%, so the soil around foundations rarely dries out. South Carolina is one of the most termite-active states in the country. An annual inspection is common sense here. With summer highs around 93°F, Columbia's humid subtropical climate decides when local termites are busiest. A typical home in Columbia is worth around $220k, which puts a few hundred dollars for an inspection and prevention in perspective.
Local research
Termites in Columbia, SC: what the public record shows
Before you compare quotes, it helps to know which termites actually live in South Carolina, when they are busiest around Columbia, and what the state figures look like. Everything below links to the agency or university page it came from.
Termite species recorded in South Carolina
Four drywood and four subterranean species mean coastal SC homes can face both soil-borne and wood-borne infestations.
Clemson Home & Garden Information CenterTermite species recorded in South Carolina
- 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…
- West Indian drywood termite (Cryptotermes brevis) — UF/IFAS lists it among the major structural pest species accounting for roughly 65% of Florida termite reports. Clemson records the 'powderpost' drywood termite in seven South C…
- Western drywood termite (Incisitermes minor) — UC IPM: 'California's second most important termite pest', 'commonly found along the Pacific coastal region extending into the Central Valley and deserts of Southern California'…
When termites are busiest around Columbia
Native subterranean species swarm in early spring, often in the afternoon; Formosan swarms mid-May to July, often in the evening, attracted to lights (Clemson).
Clemson: Formosan termites established in Aiken, Bamberg, Beaufort, Berkeley, Charleston, Colleton, Dorchester, Georgetown, Horry, Jasper, Lexington, Orangeburg, Pickens, Richland, Sumter, and York counties; Formosan colonies 'may have a million or more' workers vs. about 100,000 for natives. Eastern drywood termites found in six coastal counties; powderpost (West Indian) drywood termite in seven counties.
Sources: Clemson Home & Garden Information Center; Biology of Subterranean Termites in the Eastern United States (B1209); University of Missouri Extension; Formosan Termite Program; Termite Species Distribution in Florida and UF Termite Identification Services (IN1360); Drywood Termites (Pest Notes). Figures are quoted as the source prints them. How we check our sources
Simple ways to keep termites away
- Inspect used furniture for drywood pellets before bringing indoors.
- Set deck and porch posts on concrete, not soil.
- Keep the termite renewal contract current after treatment.
- Screen attic and foundation vents with fine mesh.
- Extend downspouts so water drains away from walls.
- Store firewood well away from the house, off the ground.
Compare quotes line by line: the areas treated, the product, the warranty and the renewal fee. The lowest total isn't always the best deal.Did you know?
Around Columbia, when danger shows up, soldier termites bang their heads against the tunnel walls to warn the colony.
Some African termite mounds stand more than 25 feet tall.
Questions people ask
How long does termite treatment take?
Bait stations take a few hours to install. Fumigation takes two to three days. A liquid barrier takes half a day to a day.
Do I have to leave my house during termite treatment?
Fumigation is different. Everyone leaves for two to three days, pets and houseplants included. Not for a soil treatment or bait stations.
Can termites damage a house on a concrete slab?
They come up through expansion joints, plumbing gaps and small cracks. Inspectors check those spots first. Yes.
What does a WDI report include?
It also notes conditions that invite them, like wood touching soil. It only covers areas the inspector could reach. It lists any termites or damage found.
Is termite fumigation common?
Around Columbia, termites are best caught early through inspection, because the damage is hidden inside wood until it is far along. Around Columbia, 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.
Are termites common in South Carolina?
Around Columbia, 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