What’s the Difference Between Subterranean and Drywood Termites?

When it comes to pests that can cause serious damage to your home, termites are at the top of the list. But did you know there’s more than one kind? For homeowners in our region, subterranean termites and drywood termites are the two most common—and knowing the difference between them can save you time, money, and stress.

This article breaks down the major differences between subterranean and drywood termites so you can better understand the threat—and how to protect your home from costly damage.

Subterranean Termites: Silent Destroyers Beneath the Surface

What Are Subterranean Termites?

Subterranean termites are the most destructive type of termite in the U.S.. As their name suggests, they live underground and build complex tunnel systems, called mud tubes, to access above-ground food sources—namely, wood in and around your home.

These termites need moisture to survive, which is why you’ll often find them in basements, crawl spaces, or anywhere wood and soil are in contact.

Signs of Subterranean Termites:

• Mud tubes along foundation walls, joists, or crawl space supports

• Soft wood that sounds hollow when tapped

• Bubbling paint or discolored drywall

• Swarming termites (usually in spring), which look like flying ants

• Discarded wings around windows or doors

Why They’re a Threat

Subterranean termite colonies can contain hundreds of thousands of members, and they’re constantly foraging. That means even a small sign of activity can signal a much larger problem behind the scenes. Left untreated, they can cause major structural damage.

Drywood Termites: Destructive Invaders That Don’t Need Soil

What Are Drywood Termites?

Unlike subterranean termites, drywood termites don’t need soil or moisture to survive. They live entirely within the wood they infest, and they tend to attack furniture, flooring, wall studs, and attic rafters.

Drywood termites typically enter homes by flying in through vents or gaps and settling into dry wood. They’re more common in warmer climates, but no home is completely off-limits—especially if you have old wood or unsealed access points.

Signs of Drywood Termites:

• Tiny piles of pellets (termite droppings) that resemble sawdust

• Kick-out holes in wooden furniture or trim

• Sudden cracks in wood or baseboards

• Swarmers indoors, especially near windows

• Wood that sounds hollow when tapped

Why They’re a Threat

Because drywood termites nest inside the wood they eat, infestations are harder to detect and often go unnoticed until significant damage is done. Unlike subterranean termites, they don’t build mud tubes—so the visual clues are subtle.

Subterranean vs. Drywood Termites: Key Differences

Feature	Subterranean Termites	Drywood Termites
Habitat	Soil-based, need moisture	Dry wood, no soil needed
Colony Size	Up to 1 million	A few thousand
Common Entry	Ground contact, mud tubes	Airborne swarmers
Signs	Mud tubes, hollow wood, wings	Pellets, kick-out holes, cracked wood
Damage Speed	Rapid, structural	Slower, cosmetic to structural
Preferred Conditions	Moist, humid	Dry, protected wood

Understanding these distinctions can help homeowners know what to look for—and when to take action.

Why a Professional Termite Inspection Matters

Identifying the type of termite you’re dealing with is not always easy. Both kinds can cause similar damage, and by the time you notice the signs, the colony is usually well-established.

At Specter Pest Control, our trained technicians know what to look for—from subtle frass piles to hidden mud tubes. We offer:

• Thorough home inspections

• Clear identification of termite species

• Customized treatment plans based on type and extent of infestation

• Long-term prevention strategies

Whether you’re spotting droppings in your window sill or worrying about warped wood on your porch, we’re here to help you take the right next step.

How to Prevent Termite Infestations

While not every infestation can be prevented, there are some smart moves you can make as a homeowner:

For Subterranean Termites:

• Keep wood and soil separate—install concrete or metal barriers

• Fix leaky faucets and pipes to reduce excess moisture

• Seal foundation cracks to block access

• Remove wood debris from crawl spaces or yards

For Drywood Termites:

• Seal vents, soffits, and attic openings

• Inspect furniture or antiques before bringing them inside

• Keep firewood stored away from the home

• Schedule regular inspections, especially before home purchases

Worried About Termites? We’ve Got You Covered.

Whether you’re battling an active infestation or want peace of mind, Specter Pest Control is your go-to expert for termite treatment and prevention. We use modern, proven methods to eliminate colonies and safeguard your home for the long haul.

Schedule your free home inspection today, and let our experienced team protect what matters most—your home.