Termites cause billions of dollars in property damage across the United States every year, and most homeowners don't realize they have a problem until the damage is already done. That's because termites work quietly, hidden behind walls, under floors, and inside wood structures where you can't easily see them. Knowing the signs of termites in a home early can save you thousands in repair costs and protect the structural integrity of your property.

At Defender Termite & Pest Management, we've been inspecting and treating homes across the Greater Sacramento area since 1999. Over that time, our team has seen every stage of termite damage, from the earliest warning signs to full-blown infestations that required extensive wood repair and reconstruction . That hands-on experience has taught us exactly what homeowners should be watching for, and when it's time to call a professional .

This article breaks down six clear indicators that termites may be active in your home, along with what each sign looks like and what you should do about it. Whether you're a homeowner noticing something suspicious or a buyer preparing for a real estate transaction , these are the red flags that demand your attention. Let's get into the specific signs you need to know .

Before you start searching for individual signs of termites in a home , a certified inspector gives you the most reliable confirmation available. They use specialized tools and access points that go far beyond a standard visual check , making a professional inspection the most important step you can take when you suspect a problem.

Inspectors examine areas most homeowners never access, like crawl space joists, attic framing, and wall voids . They use moisture meters and probes to detect hidden activity behind finished surfaces that shows no outward damage at all.

Your inspector also looks for subtle structural changes that signal long-term feeding, such as compressed wood grain or minor floor deflection . These findings often don't produce any visible surface damage until a colony has been active for months or longer.

Book an inspection if you notice discarded wings near windows, hollow-sounding walls, or unexplained soft spots in floors or baseboards. You should also prioritize one before any real estate transaction in California, where a Wood Destroying Organism (WDO) report is commonly required to close a sale.

Don't wait for multiple signs before you act. Termites can cause significant structural damage in a matter of months under the right conditions, and Sacramento's warm climate creates ideal conditions for year-round activity.

A typical inspection covers the foundation perimeter, garage framing, attic space, and any wood-to-soil contact points . Inspectors in the Sacramento area pay close attention to subterranean species because of local soil conditions and climate. Most residential inspections run 45 minutes to two hours depending on property size and access.

Your inspector documents every finding, including damage location, species evidence, and infestation severity . You receive a written report that gives you a complete picture of what's happening inside your home.

Ask for a written report that details the species, the extent of structural damage, and recommended treatment options . Use that document to schedule targeted treatment and, if needed, wood repair to restore compromised framing or support members.

Act on the report quickly. The longer a colony feeds, the more costly and structurally complex the repair process becomes.

Subterranean termites build mud tubes to protect themselves while traveling between underground colonies and the wood they feed on. These pencil-width structures rank among the most reliable signs of termites in a home and appear most often along foundation walls, crawl space framing, and floor joists.

Mud tubes are narrow, brown tunnels roughly the diameter of a pencil. You'll find them most often running along concrete foundations, block walls, and floor joists in crawl spaces. Check also along the interior of garage walls and any exterior siding sitting close to grade level.

Break off a small section of the tube and look for live termites moving inside. Leave the rest of the tube intact so a professional can confirm the species and level of activity during an inspection without losing critical evidence.

Active tubes contain live termites and feel slightly moist. Inactive tubes crumble easily and dry out. An inactive tube does not mean the colony is gone. Termites often shift to a new entry point nearby, so the absence of activity in one tube rarely tells the full story.

Photograph the exact location and length of each tube before touching anything further. Then schedule a licensed inspection so a professional can assess active entry points and treatment options before the colony spreads deeper into your home's framing.

Finding winged termites or piles of discarded wings near windows and doors is one of the clearest signs of termites in a home. Swarmers are reproductive termites that leave a mature colony to start a new one, which means a large, established colony is already somewhere on or near your property.

Termite swarmers have straight antennae, a broad waist, and two pairs of equal-length wings . Flying ants have bent antennae, a pinched waist, and unequal wings. These physical differences are the fastest way to distinguish the two before you contact an inspector.

When in doubt, collect a sample in a sealed bag and bring it to a licensed inspector for species confirmation.

Swarmers move toward light sources , so look for them near windows, sliding doors, and light fixtures . After a swarm event, the shed wings pile up on windowsills and along baseboards since termites drop them almost immediately after landing.

In Sacramento, subterranean termites typically swarm during late winter and spring . Drywood termites swarm in late summer and fall. Knowing when you saw swarmers helps an inspector narrow down the species faster.

Photograph the swarmers and collect a specimen before cleaning them up. Then contact a licensed termite professional immediately to identify the species and locate the colony before it spreads further into your home's structure.

Termites consume wood from the inside out, leaving a thin outer shell that looks intact but has nothing solid behind it. This internal feeding is one of the most telling signs of termites in a home because the structural integrity of walls, floors, and framing weakens before any surface damage becomes obvious.

When you tap on termite-damaged wood , it produces a dull, hollow sound instead of a solid knock. You may also notice the surface feels soft or papery under light pressure, and in advanced cases the wood shows visible galleries or a maze-like pattern of tunnels running along the grain.

Check baseboards, door frames, window sills, and exposed floor joists by tapping with a screwdriver handle and listening for hollow returns. Press a probe or pointed tool gently into soft spots to measure depth, and avoid aggressive probing in load-bearing framing without a professional present.

Rot and water damage produce soft, discolored, or crumbling wood that smells musty. Termite damage , by contrast, runs along the grain in clean galleries and rarely shows discoloration or odor until the infestation has spread significantly.

Document the location and extent of any hollow or soft wood with photos before touching it further. Then contact a licensed termite inspector who can assess whether treatment, structural repair, or both are necessary to restore your home safely.

Frass is one of the more overlooked signs of termites in a home , yet it gives you a direct clue that drywood termites are actively feeding above you. Unlike subterranean termites, drywood termites push their waste out of the wood through small openings called kick-out holes, leaving behind tiny piles that accumulate on surfaces below.

Drywood termite frass consists of tiny, pellet-shaped droppings roughly the size of a poppy seed. The pellets have six flattened or concave sides and range in color from light tan to dark brown , depending on the wood the termites are eating. You'll usually find a small cone-shaped pile directly beneath the kick-out hole.

Look for frass along windowsills, door frames, and baseboards , especially in areas with exposed or older wood. Attic framing and garage door trim are also frequent locations in Sacramento-area homes where drywood termite pressure runs high.

Carpenter ant debris includes wood shavings, soil, and insect body parts mixed together. Termite frass, by contrast, consists entirely of uniform, smooth pellets with no other material mixed in.

Clean the area thoroughly, then check it again in 48 to 72 hours . If a new pile appears, the colony is still active above that spot. Contact a licensed termite professional to locate the infestation and recommend a targeted drywood treatment before the colony spreads further.

Some of the most overlooked signs of termites in a home appear on surfaces you look at every day. Paint changes, small pinholes, and doors that suddenly stick are quiet indicators that termites are feeding inside walls and framing you can't directly see.

Termites produce moisture as they feed , and that moisture pushes outward through drywall and paint. Look for bubbling, peeling, or discolored patches on walls that have no connection to plumbing or roof leaks. Small pinholes in drywall can also mark exit points where termites have broken through the surface layer.

When termites feed through door frames and floor joists , the surrounding wood shifts and swells. Doors and windows that recently became difficult to open or close without an obvious reason deserve a closer look, especially at ground-floor level.

By the time surface changes become visible , a colony has typically been active for a significant period. These symptoms show up late because termites consume internal wood fibers first and only affect outer surfaces once the damage reaches deeper structural layers.

Avoid cutting into walls without a professional assessment. Contact a licensed termite inspector who can use moisture meters and probes to confirm activity without causing unnecessary structural disruption. Acting quickly at this stage limits both the treatment scope and the repair costs that follow.

The signs of termites in a home covered in this article each point to a problem that gets more costly the longer you wait. Whether you found mud tubes, frass, hollow wood, or discarded wings , the next move is the same: contact a licensed professional before the damage spreads further into your framing and support structures.

Defender Termite & Pest Management has served homeowners across the Greater Sacramento area since 1999. Our team handles everything from initial inspection and species identification to targeted treatment and structural wood repair , so you don't need to coordinate multiple contractors to resolve the problem. We also offer 24/7 emergency service for situations that can't wait until a standard business day.

Schedule a termite inspection with Defender Termite & Pest Management today. Acting now protects your home's structural integrity and keeps repair costs from growing into a far larger project down the road.