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Formosan Termite Control in Lafayette, LA

Inspection and treatment for Formosan subterranean termites, a species a Louisiana survey lists as established in Lafayette Parish.

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  • Serving Lafayette Parish
  • Formosan termite swarm season
  • Safety notes for children and pets

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Formosan Termites

Formosan Termite Control: what it covers

Quick answer

Formosan subterranean termites are one of the termite species a 1999-2001 Louisiana survey lists as established in Lafayette Parish. Their colonies can be large and can forage well beyond the spot where damage shows, so control starts from finding where the colony reaches, not from the one board that looks wrong.

Formosan Termite Control illustration for Lafayette, LA, with rolling hills and a red barn in the background

Formosan termites are the species most worth knowing about in this parish. The LSU survey that lists Lafayette among the places where they are established is the reason this page exists at all, and it is the first thing a homeowner should understand: a termite problem here is more likely to be this species than the smaller native ones people picture when they think of a crawl space.

What makes the work hard is that the damage and the colony are usually in different places. Galleries run through soil, along a slab edge, inside a wall void and up through a porch footing, and the wood that shows damage may be the last thing the colony reached rather than the first. A visit that only looks at the visible wood will miss most of what the colony is doing.

The rest of this page explains how a Formosan job is approached: what an inspection looks for, how treatment is chosen, what the homeowner can do between visits, and how a swarm fits into the picture. It is written for an owner who wants to understand the plan before agreeing to it.

Service area
Lafayette & Lafayette Parish
Availability
Phones answered 24/7
Warning signs

Signs you need formosan termite control

Termiticides and bait materials are regulated products and must be used exactly as their labels direct. Keep children and pets away from treated soil and bait stations until the material has dried or the technician has said it is safe. Do not dig into a treated soil zone or add your own product to a station, and do not disturb a mud tube in a way that spreads soil or debris into the living space.

  • Mud tubes on the outside of a foundation wall, pier or porch footing
  • Swarmers or shed wings on a windowsill, porch light or inside a door in late spring
  • A baseboard or sill that sounds hollow when tapped, with no visible hole
  • Blistered paint or a bulge in drywall near a slab edge that stays damp
  • Wood that crumbles when a screwdriver is pushed into a joint along a sill or beam
  • Soil piled at a slab edge or a crack in a concrete step that keeps reappearing
Our process

How our formosan termite control visit works

  1. Walk the foundation and the ground around it

    The inspection starts outside. The technician checks the slab edge, piers, porch and step footings, any wood in contact with soil, and the state of mulch and debris against the wall, because those are the places where a Formosan colony usually makes its first contact with a house.

  2. Probe the structure, not only the surface

    Sill plates, joists, door frames and the wood under sinks and along plumbing are sounded and probed. A board that looks sound can hold galleries inside, and the probe is what tells the difference between surface staining and a live feeding site.

  3. Look for the swarm trail

    Shed wings and dead swarmers in window corners, porch fixtures and spider webs can show where a colony has been releasing reproductives. Where that trail lines up with a wall or a tree, the inspection widens to cover that side.

  4. Choose the method against the colony

    A liquid soil barrier, a bait system or a combination is chosen from what the inspection found. A colony that is coming in from the ground along a slab edge is handled differently from one feeding inside a wall that does not touch soil.

  5. Write the plan and the monitoring schedule

    The homeowner receives a written description of what was found, what is being done, what will be checked next and when, and what the homeowner should avoid doing in the meantime, including leaving wood or cellulose piled against the house.

Job stories

Typical jobs for formosan termite control

Typical job
Illustration: Mud tubes on a pier beside a crawl space

Mud tubes on a pier beside a crawl space

What homeowners notice
A homeowner notices a thin tube of soil on a brick pier under the house and a soft spot in a sill near the back door. The house sits on piers, and the crawl space hatch is at the rear.
What we do
The crawl space is entered, the sills and joists are probed and the soil line outside is walked. Moisture readings are taken where the wood is damp, and the trail is followed along the foundation to a bed that touches the wall. The bed is pulled back and the soil side is planned for treatment.
What to expect
The report separates the active tube from an old repair, lists the sill as a finding for a builder and sets a monitoring plan with dated checks through the swarm season.

4-5 hours typical visit

What makes Formosan termites different from the other termites people know?

Formosan termites form large colonies that can forage a long way and can feed in wood that never touches the ground. That combination is why an inspection has to look at both the soil side and the structure side of a house.

Most homeowners have heard of termites in general terms and assume the problem is a slow one. Formosan colonies do not behave that way. A mature colony can send workers well beyond the spot where a homeowner first sees damage, and it can build a route from soil into a wall void, so the house is being fed on from more than one direction at once.

The practical difference for a homeowner is timing. A colony that has been feeding for a season can have removed a surprising amount of the wood it reached before any surface sign shows, because the damage is inside framing that is painted, papered or covered by trim. That is why a Formosan job in this parish is judged by what an inspection finds in hidden places and not by what the house looks like from the street.

The species is also the reason the swarm is taken seriously. A swarm from an established colony is the visible end of a process that has been running for some time, and it is a signal that the colony is mature enough to send out reproductives. The swarm does not describe the whole colony, but it does tell the owner that the colony is close enough to matter.

Why does a parish survey matter to a homeowner?

The survey is the reason to treat Formosan termites as a live possibility rather than a rare one. It records the species as established in Lafayette Parish, which means a homeowner here should not assume the problem is a different species just because the house is in the city.

A 1999-2001 survey of Louisiana termites, published through the LSU repository under the title Practical considerations of the Formosan subterranean termite in Louisiana, lists Lafayette among the parishes where the species is established. That is a statement about the parish as a whole. It does not say which street or which house has a colony, and no page on this site claims to know that.

What it does tell an owner is where to start. A property in the parish is treated as one where Formosan termites are a credible possibility, so the inspection is set up to look for them, and the monitoring plan is built for a colony that could be active through the spring swarm season and beyond.

The homeowner does not need to be a termite expert to use this. The useful question to ask any provider is whether the inspection checked for the Formosan pattern specifically, meaning soil contact, galleries in framing and the swarm trail, and whether the plan says what would count as a sign that the treatment is working.

How is a Formosan colony found on a property?

A colony is found by following evidence rather than by searching at random: mud tubes, swarm trails, sounded wood and moisture patterns all point toward the feeding site, and the inspection narrows from there.

The first clues are usually outside. A mud tube against a pier, a crack in a step or the edge of a slab is a sign that workers are travelling between soil and wood. Tubes can be broken and rebuilt quickly, so the presence of fresh soil and a clean break is more useful than a single tube seen on one visit.

Inside, the work is slower. Sounding the wood with a tool, probing joints and checking the underside of sills and floor joists in a crawl space or along a slab edge gives an inspector a sense of where hollow wood or soft spots are. Moisture meters help show where the wood is staying wet, because damp wood is more attractive to termites and easier for them to work.

Swarm evidence is the last piece. Shed wings collected in a corner, dead swarmers in a porch light or a line of them along a sill can show where the colony has been releasing reproductives. If the trail leads to a tree, a stump or a fence line, the inspection extends to those, because the colony may be in more than one place.

What does treatment look like, and what does it ask of the homeowner?

Treatment is planned from the inspection and can combine a soil barrier, a bait system and structural fixes. The homeowner's part is mostly about clearing the house edge and reporting changes between visits.

A soil treatment places a barrier in the ground around the foundation and along the path the colony uses to reach wood. Its purpose is to stop workers crossing from the soil into the structure, so its quality depends on the soil being treated thoroughly and on gaps being closed where pipes, slab cracks and pier footings pass through. A barrier only works where it is actually in the ground.

A bait system uses stations placed in the soil around the house. Workers carry a slow-acting material back to the colony, which is the reason bait is valued for a large colony: it reaches the colony itself rather than only the workers near the house. It needs a monitoring schedule, because a station that is never checked tells nobody anything.

Between visits, the homeowner can help by keeping wood, cardboard and cellulose away from the foundation, by keeping mulch back from the wall and by fixing leaks that keep soil wet. None of those steps replaces the treatment, but each one takes away something the colony depends on.

What happens after the first treatment?

A Formosan plan is a schedule rather than a single event. The next checks confirm whether the colony is still feeding, whether new activity has appeared and whether the method needs changing.

A written plan should say when the next check is due and what that check will look at. For a soil or bait approach the checks look at stations, the soil zone and the structure for new mud tubes or fresh damage. A clean inspection after a treatment is a good sign, but it is not proof that the colony is gone, because hidden galleries can take time to show.

If a swarm appears after treatment, the owner should treat that as information rather than as a failure. A swarm can come from a colony that is still active, from a neighboring colony or from a colony that was reduced but not removed. The right response is an inspection of the house and nearby trees and a review of whether the plan needs more monitoring.

The owner should keep a short log of anything seen between visits: a new tube, a swarm date, a bubble of paint, a soft spot in a floor. The log is the most useful thing to bring to the next check, because the technician can compare it against what the inspection finds rather than relying on memory.

Options

Types and options for formosan termite control

Colony feeding inside a wall or sill

Galleries run through framing that never touches soil, so the colony is reached by monitoring and a targeted approach rather than a soil barrier alone. The damage is often found late because the wood looks sound from the room side.

Colony coming in along the foundation

Mud tubes and soil contact at the slab edge, pier footings and the porch step point to ground-nesting activity. The plan there centers on the soil zone around the foundation and on removing the wood-to-soil contact that lets the colony cross over.

Swarm without visible damage yet

A swarm shows that a colony is mature and nearby, but the house may show nothing else. The plan is a full inspection and a monitoring schedule set before the next swarm season, so the first sign of feeding is caught and not the first sign of a loss.

Lafayette Parish

Why formosan termite control is different in Acadiana

The 1999-2001 Louisiana survey lists Lafayette Parish among the parishes where Formosan subterranean termites are established. The statement is about the parish, not about any single property.

Swarm season runs late April to June in the parish, with the peak in May and June. A swarm in that window is the usual first sign a homeowner notices.

Owner-occupied housing is 53.1 percent in the city of Lafayette and 65.5 percent in the parish (2020-2024 ACS), so most of the decisions about these treatments are made by the person who lives in the house.

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Where we work

Formosan Termite Control across Lafayette Parish

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Related

Termite Swarm Inspection

An inspection of the house and nearby trees after termite swarmers or shed wings appear, during the late-spring swarm season.

Liquid Termite Soil Treatment

A liquid termiticide barrier placed in the soil around the foundation, where termites cross from the ground into the structure.

Termite Bait Station Monitoring

Bait stations placed in the soil around a house and checked on a set schedule, so termite activity is found and recorded through the whole year.

Subterranean Termite Inspection

A written inspection of a house and its foundation for subterranean termites, covering the structure, the soil edge, the crawl space and the yard.

Guides

Read before you book

Are Formosan Termites in Lafayette Parish?

Yes, according to a 1999-2001 Louisiana survey published through the LSU repository, which lists Lafayette Parish among the parishes where Formosan subterranean termites are established.

How Do I Check a Louisiana Pest Control License?

In Louisiana, the Department of Agriculture and Forestry (LDAF) runs the structural pest control licensing through its Structural Pest Control Commission, which was created within the department.

FAQ

Formosan Termite Control FAQs

Is a Formosan termite the same as the termite I have seen in a crawl space?

Possibly not. Formosan termites are one species, and the 1999-2001 Louisiana survey lists Lafayette Parish among the places where they are established. Only an inspection can say which termite is in a particular structure, so do not assume either way from a photograph of a worker.

Why does the inspection look at the trees and the ground and not just the house?

Because the colony does not stay in the house. Workers forage through soil, and a swarm can come from a tree, a stump or a fence line. Checking only the structure would leave the most likely routes unchecked.

Can I treat Formosan termites myself with a store product?

Termiticides are regulated products and must be applied according to their label. A store product applied in the wrong place can miss the colony and make the job harder to read later, so ask for the inspection first and talk through options before buying anything.

How long will the plan take to show results?

It depends on the colony and on how it was reached. A clean check after treatment is encouraging but not proof, because hidden galleries can take time to show. The written plan should say what the next check will look for and when.

Will a swarm after treatment mean the treatment failed?

Not automatically. A swarm can come from a colony still active, a neighboring colony or one that was reduced but not removed. It is a reason to inspect again and review the plan, not a verdict on the work already done.

Can I check the credentials of the people doing the work?

Yes, and you should. Ask for the state license number and verify it with the Louisiana Department of Agriculture and Forestry, which runs the Structural Pest Control Commission, before any work starts. The details of who carries which credential are set out on the About page.

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