Termites in Your Home: Signs, Damage, and How to Prevent an Infestation

Termites can cause damage to wooden components of a home while remaining difficult to detect. They may enter through foundations, crawl spaces, soil, or other areas where wood and moisture conditions provide access to the structure.

Learning the signs of termite activity and understanding the conditions that can increase termite risk can help homeowners recognize potential problems early. A professional termite or WDO inspection can provide a closer evaluation when activity is suspected.

Why Are Termites a Concern for Homeowners?

Termites feed on cellulose, which is found in wood and many other plant-based materials. In a home, this can include structural wood and other wood components.

Termite activity may occur inside walls, beneath floors, in crawl spaces, around foundations, or in other areas that are not readily visible. Because of this, damage can develop without obvious signs on the surface.

A professional inspection can help determine whether visible evidence is consistent with termite activity and whether conditions around the property could contribute to future problems.

What Are the Signs of Termites?

Homeowners may notice several potential signs of termite activity.

Mud Tubes

Subterranean termites may create mud or shelter tubes along foundations, walls, piers, or other surfaces. These tubes help protect termites as they travel between their colony and a food source.

Finding mud tubes on or near a structure can be a reason to schedule a professional inspection.

Discarded Wings

Swarming termites can shed their wings after leaving the colony. Groups of discarded wings near windows, doors, foundations, or other areas may indicate termite activity.

Damaged or Hollow-Sounding Wood

Termites can consume wood from within, potentially leaving exterior surfaces that appear intact. Wood that sounds hollow when tapped or appears weakened can warrant further evaluation.

Sticking Doors and Windows

Changes in doors or windows can have many causes, including seasonal movement and changes in humidity. However, unexplained changes can sometimes occur alongside structural wood damage and may warrant inspection when other signs are present.

Small Openings or Damaged Areas

Small openings, damaged surfaces, or other changes in exposed wood may be associated with insect activity. An inspector can evaluate these signs in the context of the surrounding structure.

Where Do Termites Enter a Home?

Termites can access structures through areas where the building meets the soil or where moisture and wood create favorable conditions.

Potentially vulnerable areas include:

• Foundations
• Crawl spaces
• Sill plates
• Floor joists
• Support posts
• Decks and porches
• Areas with wood-to-soil contact
• Utility and plumbing penetrations

Moisture around the foundation can also create conditions that make an area more attractive to termites and other WDOs.

Subterranean vs. Drywood Termites

Different termite species have different habits, which can affect where they are found and what signs they leave behind.

Subterranean Termites

Subterranean termites are associated with soil and may build shelter tubes to move between the ground and a structure. They can gain access through foundation areas and other points where the building connects with the surrounding soil.

Drywood Termites

Drywood termites can infest dry wood and may remain within the wood they are consuming. Unlike subterranean termites, they do not rely on soil in the same way.

Because termite behavior varies, identifying the type of termite involved is an important part of determining appropriate next steps.

What Conditions Attract Termites?

Termites need suitable food sources and environmental conditions. Several common property conditions can increase the risk of termite activity.

Moisture

Leaking plumbing, roof leaks, poor drainage, and standing water can contribute to moisture around a structure.

Homeowners should repair known leaks promptly and make sure water drains away from the foundation.

Wood-to-Soil Contact

Wood that directly contacts soil can provide termites with easier access to a structure.

Where practical, structural wood should be separated from soil using appropriate construction materials and methods.

Excessive Mulch

Mulch can retain moisture near the foundation and may make it harder to identify termite activity. Homeowners should avoid excessive mulch buildup directly against the structure.

Firewood and Lumber

Firewood, scrap lumber, and other wood materials stored close to a home can create potential food sources near the structure.

Keep wood stored away from the home and off the ground where possible.

Vegetation

Shrubs, vines, and other vegetation that contacts the structure can create moisture and access concerns. Keeping vegetation trimmed away from the home can improve visibility around the foundation and exterior walls.

How Can Homeowners Prevent Termite Problems?

Preventing every termite infestation is not possible, but homeowners can reduce conditions that may contribute to termite activity.

Control Moisture

Regularly check for:

• Plumbing leaks
• Roof leaks
• Clogged gutters
• Damaged downspouts
• Poor drainage
• Standing water
• Crawl-space moisture

Addressing these issues can help maintain a drier environment around the structure.

Keep Wood Away From Soil

Maintain separation between structural wood and soil where possible. Firewood, lumber, and other wood materials should also be stored away from the home.

Maintain the Foundation Area

Keep excessive mulch, debris, and vegetation away from the foundation. A clear perimeter makes it easier to spot potential signs of termite activity and allows for better inspection access.

Monitor for Warning Signs

Periodically look around accessible areas of the property for mud tubes, discarded wings, damaged wood, or other unusual changes.

If something appears suspicious, a professional evaluation can help determine whether termites or another issue may be responsible.

What Is a Termite Inspection?

A termite inspection is a visual evaluation focused on identifying evidence of termite activity, damage, and conditions that may increase termite risk.

The inspection may include accessible interior and exterior areas, foundations, crawl spaces, basements, attics, decks, porches, and structural wood.

A broader WDO inspection can also evaluate evidence associated with other wood-destroying organisms, including wood-boring beetles, carpenter ants, carpenter bees, and wood-decay fungi.

What Happens During a Termite Inspection?

The inspector typically evaluates accessible areas of the home for visible evidence and conditions associated with termite activity.

The exterior may be examined for:

• Mud tubes
• Wood-to-soil contact
• Damaged wood
• Foundation access points
• Moisture conditions
• Drainage problems
• Areas around utilities and plumbing

Inside the home, an inspector may look at accessible baseboards, window sills, door frames, cabinets, and framing.

Basements and crawl spaces can be particularly useful areas to evaluate because they provide access to structural components such as sill plates, beams, joists, and support posts.

Can You Have Termites Without Seeing Them?

Yes. Termite activity can occur in concealed areas where it is not immediately visible to a homeowner.

Finished walls, flooring, insulation, stored belongings, and other obstructions can limit visibility. This is one reason professional inspections can be useful when there are signs of possible activity or conditions that increase termite risk.

A visual inspection also has limitations. Areas that cannot be accessed should be documented as inspection limitations.

What Happens if Termites Are Found?

If an inspection identifies evidence of termite activity, the appropriate response depends on the location, extent, and type of activity identified.

Possible next steps may include:

• Professional termite treatment
• Additional inspection or evaluation
• Repair or replacement of damaged structural wood
• Correction of moisture or drainage problems
• Ongoing monitoring or a termite protection plan

Treatment decisions should be based on the findings of qualified professionals who can evaluate the property and determine the appropriate course of action.

How Often Should You Have a Termite Inspection?

There is no single inspection schedule that applies to every home. Factors such as location, construction, moisture conditions, previous termite activity, and existing protection or monitoring programs can influence how often a property should be evaluated.

Homeowners with a history of termite activity or conditions that increase termite risk may benefit from regular professional inspections.

When Should You Schedule a Termite Inspection?

Consider scheduling a professional termite inspection if you notice:

• Mud tubes around the foundation
• Discarded wings
• Damaged or hollow-sounding wood
• Unexplained wood deterioration
• Possible termite activity near the home
• Persistent moisture around the foundation
• Wood-to-soil contact
• A history of termite activity or treatment

A termite inspection can also be appropriate during a home purchase or sale when a property needs to be evaluated for evidence of wood-destroying organisms.

Termite FAQs

Are termites only found in older homes?

No. Termite activity can occur in homes of different ages. Construction, moisture conditions, landscaping, and other factors can affect termite risk.

Are termites easy to see?

Not always. Some termite activity occurs in concealed areas, including inside or beneath wood and around foundations.

What is the first sign of termites?

There is no single first sign in every infestation. Mud tubes, discarded wings, damaged wood, and other evidence can indicate possible activity.

Can moisture attract termites?

Moisture can contribute to conditions that are favorable to termites and other WDOs. Leaks, poor drainage, standing water, and other moisture problems should be addressed promptly.

What is the difference between a termite inspection and a WDO inspection?

A termite inspection focuses on termites, while a WDO inspection can cover termites and other organisms that damage wood, depending on the inspection scope and local requirements.

Does finding termites mean the home has major structural damage?

Not necessarily. The presence of termites does not by itself establish the extent of damage. A professional inspection can document visible evidence and identify areas that may require additional evaluation.