Termites in My Wall: What to Do Right Now (2026)

Last updated: April 11, 2026

By Pest Control Pricing Team

If you found termites in your wall, stop touching the area and do not spray anything. Termite activity in a wall means structural damage is likely happening right now, and the colony may have been feeding for years before you noticed. Here is what to do in the next 24 hours. Call (866) 821-0263 to schedule a professional inspection.

This guide covers the immediate steps to take today, why you should not spray or disturb the termites, how to confirm what you are looking at, what kind of termites are in your wall, how bad the damage might be, why DIY treatment fails, what professional treatment costs, and what to expect from the inspection and treatment process. For comprehensive pricing data, see our termite treatment cost guide.

What Should You Do in the Next 24 Hours?

Discovering termites in your wall is alarming, but the situation is not as urgent as it feels in the moment. The colony has been there for years, so another day or two of measured, strategic response is far more valuable than a panicked reaction. Here is exactly what to do, step by step.

1. Stop touching the area and do NOT spray anything

This is the single most important instruction. Your natural instinct is to peel back more drywall, poke at the soft wood, or grab a can of bug spray. Do none of these things. Disturbing the damaged area causes the termites to retreat deeper into the wall, which makes the inspector's job harder. Spraying consumer insecticide kills only the handful of termites you can see, does nothing to the colony of tens of thousands hidden inside the wall, and leaves chemical residue that can interfere with professional termiticide products.

The termites will not spread faster because you left them alone for a day. Termite damage progresses slowly over months and years, not hours. A mature subterranean termite colony consumes roughly 1/5 of an ounce of wood per day. That is significant over time, but leaving the area undisturbed for 24 to 48 hours while you arrange inspections will not meaningfully increase the damage. What it will do is preserve the evidence the inspector needs to identify the species, locate the colony, and recommend the right treatment.

2. Collect specimens in a sealed bag

If you can see live termites, dead termites, or discarded wings, place 5 to 10 specimens in a sealed plastic bag or glass jar. If you found frass pellets (tiny, wood-colored granules near the damage), collect a small sample of those as well. These specimens allow the inspector to quickly confirm the termite species without having to further disturb the wall. Different species require different treatment approaches, so accurate identification is critical.

If the termites retreated before you could collect any, that is fine. The inspector can identify the species from the damage pattern, frass, or mud tubes. Specimens simply speed up the process.

3. Note the exact location and take photos

Document exactly where you found the termites. Note which room, which wall, how far from the floor, and whether the wall is an exterior or interior wall. Take clear photos and video of the damage, including any mud tubes on the wall surface, bubbling or peeling paint, frass piles on the floor or window sill, and the damaged wood itself. Measure or estimate the area of visible damage.

This documentation serves two purposes. First, it helps the inspector focus their assessment on the right areas. Second, it creates a baseline record of the damage that you may need later for repair estimates, warranty claims, or real estate disclosure documentation.

4. Call 2 to 3 pest control companies for inspections

Contact at least 2 to 3 licensed pest control companies that specialize in termite treatment and schedule inspections. Many companies offer free termite inspections. Getting multiple inspections is important for several reasons: different inspectors may find damage in different areas, treatment recommendations may vary, and prices can differ by 30% to 50% between companies for the same scope of work.

When scheduling, mention that you found active termites in a wall. This helps the company send an inspector experienced with termite work rather than a general pest control technician. Ask how long the inspection will take (a thorough termite inspection should take 45 minutes to an hour for an average home) and whether they will provide a written report. For more on what a thorough inspection involves, see our termite inspection cost guide.

5. Do not panic: the damage took years, and a few more days will not change the outcome

This point is worth emphasizing. Subterranean termites work slowly, and the colony has been in your home for a minimum of 3 to 5 years before producing visible damage. Another 3 to 5 days to schedule inspections, compare quotes, and make an informed decision will not measurably increase the damage. Making the right treatment choice matters far more than making the fastest one. Do not let a company pressure you into signing a contract on the spot during the inspection. Take the report home, compare it with other quotes, and make your decision based on the best combination of thoroughness, warranty, and price.

Why Should You NOT Spray or Disturb Them?

The advice to leave the termites alone goes against every instinct you have as a homeowner watching insects eat your house. But there are specific, practical reasons why spraying and disturbing the area is counterproductive.

Consumer spray kills surface termites but not the colony

A can of Raid, Home Defense, or any consumer insecticide will kill the termites you spray directly. But the termites you can see represent a fraction of 1% of the colony. A mature subterranean termite colony contains 60,000 to over 1,000,000 individuals, all living underground or inside the wood of your home. Killing 50 termites on the wall surface does absolutely nothing to the colony. The queen continues laying eggs (up to 30,000 per day in some species), workers continue eating wood, and the damage continues as if nothing happened.

Repellent spray creates gaps in colony exposure

Many consumer sprays contain repellent chemicals. When termites detect these chemicals, they avoid the treated area and reroute their tunnels. This means the termites stop using the tunnel you found and create new tunnels through different parts of the wall, potentially spreading the damage to areas that were previously unaffected. More critically, when the professional arrives to apply termiticide, the repellent residue from the consumer spray can create gaps in the treatment zone. Professional termiticides (like Termidor) are specifically non-repellent, meaning termites cannot detect them and walk through them freely, carrying the product back to the colony. Consumer spray residue undermines this approach.

Disturbing the area makes professional inspection harder

When you poke at damaged wood, peel back drywall, or probe the wall with a screwdriver, you scatter the termites and destroy the evidence pattern the inspector uses to assess the situation. An experienced termite inspector reads the damage pattern, the location and direction of mud tubes, the type of frass, and the condition of the wood to determine the species, the direction the colony is entering from, how long the infestation has been active, and how extensive the damage may be. Disrupting this evidence makes the assessment less accurate.

It destroys evidence the inspector needs for species identification

Different termite species require different treatment approaches. Subterranean termites require soil-based liquid barrier treatment or a bait system. Drywood termites may need localized wood injection, heat treatment, or whole-structure fumigation. The inspector identifies the species from the termites themselves, the damage pattern, and the presence or absence of mud tubes and frass. Spraying the termites and destroying these signs forces the inspector to make assumptions rather than confirmations, which can lead to incorrect treatment recommendations. For a deeper look at the signs of activity, see our guide on signs of termites.

How Do You Know Those Are Actually Termites?

Before calling pest control companies, it helps to confirm that what you found is actually termites. Several other insects and conditions can look similar to the untrained eye. Here is how to tell.

Mud tubes on the wall surface

Mud tubes are the most definitive sign of subterranean termites. These are narrow tubes, roughly the width of a pencil, made of mud, soil, and termite secretions. They typically run vertically from the foundation up the wall surface, though they can also appear horizontally along the wall. Mud tubes provide a protected highway for termites to travel between their underground colony and the wood they are feeding on. If you see mud tubes, you have subterranean termites. No other insect builds these structures.

Break open a small section of the mud tube. If termites are actively using it, you will see small, white, soft-bodied worker termites inside. Even if the tube appears empty, it may still be active; termites sometimes abandon one tunnel and build a new one nearby.

Live termites: small, white, soft-bodied insects

Termite workers are small (about 1/4 inch), pale white to cream-colored, soft-bodied insects with no wings. They are sometimes mistaken for "white ants," but ants and termites look very different upon close inspection. Termites have straight antennae (ants have elbowed antennae), a thick, straight waist (ants have a narrow, pinched waist), and if they have wings, all four wings are the same length (flying ants have front wings longer than back wings).

If you see small white insects inside damaged wood or inside a mud tube, they are almost certainly termite workers. No other common household pest looks like this.

Frass: tiny pellets near wood surfaces

Frass is drywood termite excrement, and it is one of the clearest indicators of drywood termite activity. Frass pellets are tiny (about 1 mm long), hard, oval-shaped, with six concave sides. They are typically wood-colored (tan, brown, or dark brown) and collect in small piles on window sills, floors, or ledges below the infested wood. Drywood termites push frass out of small "kick holes" in the wood surface.

If you found frass, you have drywood termites, not subterranean. This distinction matters for treatment. Drywood termites do not need soil contact and live entirely inside the wood, so soil treatment is irrelevant. They require localized wood injection, heat treatment, or fumigation.

Damaged wood: paint bubbling, hollow sound

Termite-damaged wood often shows subtle surface signs before the damage becomes severe. Paint may bubble, blister, or peel from the wall in areas where termites have consumed the wood beneath. Drywall may develop unexplained cracks or sagging. If you tap the wall with your knuckle or a screwdriver handle, areas where termites have hollowed out the wood behind the drywall will sound distinctly hollow compared to solid sections.

You can do a simple screwdriver test: press the tip of a flathead screwdriver into the wood at the damaged area. If the wood gives way easily, feels soft, or crumbles, termites have consumed the interior. Solid, intact wood resists the screwdriver. This test gives you a rough sense of damage extent without requiring you to tear open the wall.

Flying ants versus termite swarmers

If what you saw were winged insects emerging from the wall, you may have termite swarmers or flying ants. The distinction matters enormously. Here is how to tell them apart:

If you find piles of discarded wings on window sills or near baseboards, they are almost certainly termite wings. Flying ants do not shed their wings in the same way. For more on identifying swarmers, see our termite swarm guide. For a broader identification tool, try our pest identifier.

What Kind of Termites Are in Your Wall?

The species of termite in your wall determines the treatment method, cost, and urgency. There are three main types of termites that infest walls in the United States.

Subterranean termites: the most common and destructive

Subterranean termites are responsible for roughly 80% of all termite damage in the United States. They live in underground colonies in the soil and access your home through mud tubes built from the ground up. A mature subterranean colony contains 60,000 to over 1,000,000 workers. They require constant contact with soil moisture, which is why they build mud tubes: the tubes maintain the humidity level they need to survive.

If you found mud tubes on your wall, you have subterranean termites. These termites eat wood along the grain, consuming the softer spring wood and leaving the harder summer wood intact, creating a layered or "pages of a book" pattern in the damaged wood. Treatment for subterranean termites typically involves liquid barrier treatment around the foundation (Termidor, Taurus SC) or a bait station system (Sentricon, Advance), or a combination of both. For detailed treatment information, see our subterranean termite treatment cost guide.

Drywood termites: living inside the wood itself

Drywood termites do not need soil contact. They live their entire lifecycle inside the wood they are consuming, including wood framing in walls, furniture, and hardwood floors. Colonies are smaller than subterranean colonies (typically 1,000 to 5,000 individuals) but can cause significant localized damage. Drywood termites are most common in southern coastal states: Florida, Southern California, Hawaii, the Gulf Coast, and parts of the Southeast.

The primary indicator of drywood termites is frass: tiny, six-sided pellets that collect in piles below the infested wood. Drywood termites push frass out of "kick holes" to keep their galleries clean. If you find small piles of wood-colored pellets on window sills, floors, or shelves, and there are no mud tubes present, drywood termites are the likely culprit.

Treatment options for drywood termites include localized wood injection (drilling into the infested wood and injecting termiticide), heat treatment (raising the temperature of the infested area to 120 to 140 degrees Fahrenheit), or whole-structure fumigation with Vikane gas for widespread infestations. Spot treatments cost $300 to $1,000 per area; fumigation costs $2,500 to $6,000 or more depending on home size. For more details, see our fumigation cost guide.

Dampwood termites: less common, very wet wood only

Dampwood termites infest wood with high moisture content, typically above 20%. They are less common in homes than subterranean or drywood termites because modern construction practices generally keep wood dry enough to be unattractive to this species. When dampwood termites are found in walls, it is almost always associated with a moisture problem: a leaky roof, a plumbing leak inside the wall, poor drainage causing water to pool against the foundation, or wood in direct ground contact.

Dampwood termites are larger than the other species (workers are about 1/2 inch long) and produce frass that is more irregular in shape than drywood termite frass. Treatment for dampwood termites focuses primarily on fixing the moisture problem. Once the wood dries out, the termites cannot survive. Any damaged wood should be replaced, and the source of moisture must be eliminated to prevent reinfestation.

How Bad Is the Damage?

One of the most stressful aspects of finding termites in your wall is not knowing how extensive the damage is. The visible damage is almost always just the beginning. Here is what homeowners should understand about termite damage assessment.

The visible damage is the tip of the iceberg

Termites work from the inside out. They consume wood from the interior, leaving a thin outer shell of intact wood or paint that conceals the damage underneath. By the time you see bubbling paint, cracks in the drywall, or hollow-sounding areas, the wood behind that surface may be extensively damaged. This is why a professional inspection, not just your own visual check, is essential. Inspectors use tools like moisture meters, acoustic devices, and thermal imaging cameras to detect termite activity and damage behind walls without tearing them open.

Subterranean termites: damage may be extensive

If you have subterranean termites, the colony has likely been active in your home for 3 to 5 years or longer before visible damage appeared. During this time, termites have been consuming wood framing, potentially in multiple wall sections. A single subterranean colony can be working on multiple areas of the home simultaneously, connected by underground tunnels and mud tubes. The damage you found in one wall may not be the only damage in the house.

Subterranean termite damage is most commonly found in:

• Wall studs. Particularly the bottom plate (the horizontal board at the base of the wall that sits on the foundation) and lower portions of studs.
• Sill plate. The wood board that sits on top of the concrete foundation. This is often the first point of attack because it is closest to the soil.
• Floor joists. Especially in crawl spaces and basements.
• Window and door frames. Frames often sit close to the exterior wall and are accessible to termites traveling up the foundation wall.
• Attic framing. In severe cases, termites travel up multiple stories through wall studs and can reach attic framing.

You cannot determine full damage extent yourself

A professional termite inspection is the only way to determine the full extent of the damage. The inspector will examine the entire home, not just the area where you found termites, because colonies can have feeding sites in multiple locations. The inspection typically includes the interior of the home, the exterior foundation, the garage, any crawl spaces, and the attic. The inspector produces a written report, often called a Wood-Destroying Insect (WDI) report, that documents all areas of activity and damage.

Probing wood with a screwdriver gives a rough sense

If you want a preliminary sense of how bad the damage is in the area you found, you can press the tip of a flathead screwdriver into the wood. Solid, intact wood resists the screwdriver with firm pressure. Termite-damaged wood feels spongy and gives way easily, or crumbles and breaks apart. If the screwdriver pushes into the wood with minimal effort, the interior has been significantly consumed.

This test is useful for the immediate area but tells you nothing about the rest of the house. Leave the comprehensive assessment to the inspector.

Does Insurance Cover Termite Damage?

This is one of the first questions homeowners ask after finding termites, and the answer is almost always disappointing. Understanding what is and is not covered helps you plan financially for the treatment and repair costs ahead.

Standard homeowners insurance almost never covers termite damage

Termite damage is specifically excluded from virtually all standard homeowners insurance policies. Insurance companies classify termite damage as a maintenance issue, not a sudden or accidental event. The reasoning is that termite damage develops over years and is considered preventable through regular inspections and treatment. This same logic applies to other slow-developing damage like mold, rot, and settling.

This means both the cost of professional termite treatment ($1,200 to $3,500) and the cost of repairing any structural damage ($500 to $8,000 or more) come out of pocket. For a fuller discussion, see our guide on whether termites are covered by insurance.

Very limited exceptions

A small number of policies may cover damage from a sudden structural collapse caused by previously unknown termite damage. For example, if a ceiling caves in due to termite-weakened rafters, some policies may cover the collapse itself (but not the underlying termite damage or treatment). These claims are rare and heavily scrutinized. Do not assume your policy covers this scenario. Read your policy language or call your insurance agent to confirm.

Some states require termite disclosure on insurance applications

In some states, insurance applications ask whether the home has had prior termite damage or treatment. Failing to disclose known termite history can void your policy. If you have had termite treatment, disclose it honestly on insurance applications.

A termite bond may provide better coverage than insurance

Many professional termite treatment companies offer annual termite bonds (also called warranties or service agreements) for $150 to $400 per year. A termite bond provides annual inspection and retreatment at no additional cost if termites return. Some bonds also include repair coverage, meaning the company will pay for structural repairs if termites cause new damage while the bond is active. This is often better financial protection than insurance, because it covers the specific risk insurance excludes.

Why Does DIY Termite Treatment Fail?

Unlike cockroach or ant treatment, where consumer products can be effective, DIY termite treatment almost always fails. There are specific, structural reasons for this, and understanding them helps you avoid wasting money on products that will not solve the problem.

Consumer products cannot reach the colony

The termites you found in your wall are workers from a colony that may be 10 to 100 feet away in the soil (for subterranean termites) or deep inside the wood framing (for drywood termites). Consumer termite sprays and foams kill the termites they contact directly, but they cannot reach the queen, the nursery, or the majority of workers that are hidden underground or inside the wood. Unless the colony is eliminated, it continues to grow and feed, and new workers replace the ones you killed.

Liquid barrier treatment requires specialized equipment

Professional liquid barrier treatment (the most common subterranean termite treatment) involves trenching a 6-inch-wide, 6-inch-deep trench along the entire foundation perimeter, drilling through concrete slabs where they meet the foundation wall, and injecting hundreds of gallons of termiticide into the soil. This creates a continuous treated zone around the home that termites cannot pass through without being exposed to the product. You need a professional-grade drill, a large-volume sprayer, knowledge of the home's construction and utility layout, and a state-issued applicator license to purchase the products. This is not a DIY project.

Bait systems require professional monitoring

Bait station systems (Sentricon, Advance, and others) work by placing stations around the home's perimeter, monitoring them regularly for termite activity, and replacing the monitoring cartridge with an active bait cartridge when termites are detected. The bait contains a slow-acting toxicant that workers carry back to the colony, gradually eliminating it. This process takes months and requires regular (typically quarterly) professional monitoring to check stations, replace consumed bait, and assess colony activity. Consumer bait products sold in hardware stores do not include this monitoring component and are generally ineffective.

Improper treatment gives a false sense of security

Perhaps the most dangerous consequence of DIY termite treatment is the false sense of security it creates. A homeowner sprays the termites they found, sees no more termite activity on the surface, and assumes the problem is solved. Meanwhile, the colony continues feeding inside the walls, and damage progresses for months or years before the next visible sign appears. By then, what was a moderate damage situation may have become a major structural repair.

Professional treatment is an investment, but it protects a much larger investment: your home. For an average home, termite treatment costs $1,200 to $3,500, while a single wall or floor system repair can cost $2,000 to $8,000. The longer you delay effective treatment, the more expensive the eventual repair becomes. See our pest control cost guide for broader pricing context.

What Does Professional Termite Treatment Cost?

Professional termite treatment costs depend on the treatment method, the size of the home, the severity of the infestation, and your geographic location. Here is a breakdown of typical costs homeowners pay in 2026.

Repair costs are separate

The treatment costs above cover eliminating the termite colony and preventing reinfestation. Repairing the structural damage the termites caused is a separate expense. Repair costs depend entirely on the extent of the damage:

• Minor damage (softened wood in a small area, no structural compromise): $500 to $1,500 for wood replacement and drywall repair.
• Moderate damage (one or more wall studs hollowed, sill plate damage): $2,000 to $5,000 for framing repair and drywall restoration.
• Severe damage (multiple wall sections, floor joists, or load-bearing members compromised): $5,000 to $8,000 or more, potentially requiring a structural engineer assessment and significant reconstruction.

Most homeowners do not know the repair cost until after the treatment is complete and the damaged areas are opened up for assessment. The inspector can give you a rough idea of the damage extent, but the true scope is often not visible until walls are opened.

Getting the best price

Always get at least 2 to 3 written quotes before committing to a treatment plan. Compare not just the treatment price, but the warranty terms, annual bond cost, and whether the quote includes repair or only treatment. Ask each company to explain their treatment approach, what products they use, and why they recommend that specific method for your situation. The cheapest quote is not always the best value; warranty terms and retreatment coverage are equally important. For full pricing context, see our termite treatment cost guide.

What Warranty Should You Expect?

A termite treatment warranty is a critical part of the service you are paying for. Understanding warranty terms before you sign a contract helps you compare companies and avoid surprises later.

Retreatment guarantee: 1 to 5 years

Most professional termite treatment companies offer a retreatment guarantee of 1 to 5 years. This means if termite activity returns during the guarantee period, the company will retreat the home at no additional cost. The guarantee period varies by company and treatment method. Liquid barrier treatments typically carry a 5-year guarantee because the product remains active in the soil for 5 to 10 years. Bait systems typically carry a 1-year guarantee that renews annually with the monitoring plan.

Some warranties cover repair costs

A few companies offer warranties that cover not only retreatment but also repair costs for new termite damage that occurs during the warranty period. These are more expensive (higher upfront treatment cost or higher annual bond cost) but provide significantly more financial protection. If a company offers both a retreatment-only warranty and a retreatment-plus-repair warranty, seriously consider the repair coverage, especially if you have a large or older home.

Annual bond: $150 to $400 per year

After the initial warranty period, most companies offer an annual termite bond (also called a service agreement) for $150 to $400 per year. The bond includes an annual inspection and continues the retreatment guarantee for another year. Some bonds also maintain the repair coverage. Maintaining a termite bond is generally worth the cost, because it provides ongoing monitoring, automatic retreatment if termites return, and documentation that can be valuable when selling the home.

Get all terms in writing

Before signing any contract, make sure the following are clearly documented in writing: the treatment method and products to be used, the areas of the home being treated (partial treatment vs. full perimeter), the warranty duration, what the warranty covers (retreatment only vs. retreatment plus repair), the annual bond cost after the warranty period, and any conditions that void the warranty (such as home additions or modifications without notifying the company).

What About Real Estate Disclosure?

If you are planning to sell your home in the future, or if you are currently in the process of selling, the termite discovery and treatment have legal implications for the transaction.

Disclosure is required in virtually every state

Seller disclosure laws in nearly every state require you to disclose known termite damage and any history of termite treatment to potential buyers. This includes active infestations, past infestations that have been treated, and any structural damage caused by termites, even if the damage has been repaired. Failure to disclose can result in legal liability after the sale, including lawsuits for the cost of repairs the buyer must make.

Treatment and a bond help rather than hurt the sale

Many homeowners worry that disclosing termite treatment will scare away buyers or reduce the sale price. In practice, having a current, active termite treatment and an annual bond in place often reassures buyers. It demonstrates that the problem was identified, professionally treated, and is being monitored. A home with a termite bond may actually be more attractive to buyers than a home that has never been inspected, because the bonded home has a professional guarantee of termite-free status.

The WDI report is standard in real estate transactions

A Wood-Destroying Insect (WDI) report is required or commonly requested in most real estate transactions, particularly in areas with high termite pressure. This report, conducted by a licensed inspector, documents any evidence of wood-destroying insects (termites, carpenter ants, carpenter bees, powder post beetles), damage, and treatment history. If you already have a treatment in place with a reputable company, the WDI report will reflect the treatment and active warranty, which is a positive for the transaction.

If you are currently selling and just discovered termites, disclose the finding to your real estate agent immediately. In most cases, treating the problem before closing is preferable to negotiating a credit, because the treatment provides a warranty that protects the buyer going forward. The treatment cost ($1,200 to $3,500) is typically far less than the price reduction a buyer would demand if the problem were left untreated.

For more information on termite-related topics, see our related guides:

• Termite Treatment Cost (2026)
• Termite Inspection Cost
• Signs of Termites in Your Home
• Subterranean Termite Treatment Cost
• Fumigation Cost Guide
• Are Termites Covered by Insurance?
• Pest Control Cost Guide
• When to Call an Exterminator
• Termite Swarm in My House

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