Drywood Vs Subterranean Termites In Southwest Florida Homes

February 24, 2026

Termites in Southwest Florida don't always announce themselves with obvious damage. More often, they leave small clues that are easy to miss, until a door frame starts to feel soft or a baseboard sounds hollow.

The bottom line: drywood vs subterranean termites comes down to where they live and what they leave behind. Drywood termites live inside the wood and push out hard, sand-like frass pellets through tiny kick-out holes. Subterranean termites need soil and moisture, so they travel in muddy shelter tubes and usually show up near slabs, block walls, and wet areas.

Once you know which signs match which termite, your next steps get a lot clearer.

The quick, practical differences that matter in SWFL

Think of these two termite types like two different kinds of burglars. One moves in quietly and lives in the "walls" (drywood). The other keeps a home base outside and uses covered tunnels to come and go (subterranean). That single behavior change affects how they enter, where they hide, and how you spot them.

Here's a simple side-by-side to use during a walk-around:

What you notice Drywood termites Subterranean termites
Where they live Inside dry wood In soil, then into wood
Most common "tell" Frass pellets and kick-out holes Mud tubes and moisture-linked activity
Where SWFL homeowners find signs Attic trusses, fascia, trim, lanais, furniture Slab edges, block/stucco walls, garages, plumbing areas
What the wood looks like Clean-looking galleries, can cross grain Layered look along grain, often with mud staining
Frass piles Yes, small piles under infested wood Usually no, droppings blend into tubes
How fast damage can spread Often slower per colony, but multiple spots Often faster, larger colonies are common

One extra clue: if you find shed wings indoors, a trained pro can use wing vein patterns and body shape to help confirm the type. Still, for most homeowners, pellets vs mud tubes is the faster call.

If you're sweeping up tiny pellets that look like coarse sand under a window, door trim, or attic wood, don't ignore it. That's one of the strongest drywood termite clues you'll ever get.

Drywood termites in Southwest Florida: frass pellets, kick-out holes, and "high and dry" infestations

Drywood termites don't need contact with soil, so they can start almost anywhere there's wood. In SWFL, that matters because many homes have exposed wood targets above ground, even with block construction.

Start with the two signature signs:

1) Frass pellets
Drywood termite droppings are hard pellets. They collect in little piles below the infestation. Homeowners often notice them on a windowsill track, on a lanai floor near a beam, or on the garage slab under an attic access.

2) Kick-out holes
Drywood termites push pellets out through tiny holes in the wood. These holes can look like pin pricks. You might see them in door frames, baseboards, soffit wood, fascia boards, or the wood trim around sliders.

Where to check in SWFL homes (especially in Cape Coral, Fort Myers, and coastal areas):

  • Attic trusses and roof sheathing edges near vents (use a bright flashlight).
  • Fascia, soffit returns, and wood around gable vents.
  • Lanai framing, pergolas, and any decorative exterior wood.
  • Window and door trim, especially where sun and heat dry the wood.
  • Furniture, picture frames, and hardwood pieces if you've brought items from storage.

If your home has waterfront features, also inspect any dock framing, boat lift wood, or seawall cap wood . Drywood termites can move into those pieces and later show up in nearby structures.

For prevention habits that fit local construction, you can also skim Shield's termite control strategies for Southwest Florida homes , then match the tips to your layout.

Subterranean termites: mud tubes, moisture problems, and slab-on-grade trouble spots

Subterranean termites need moisture and soil contact, so they approach your house from the ground up. That's why SWFL slab-on-grade homes, block walls, and stucco finishes can still be vulnerable. The termites don't need exposed wood outside. They only need a hidden path.

The classic sign is simple:

Mud tubes (shelter tubes)
These look like thin, brown "veins" climbing foundation edges, stem walls, or block surfaces. You'll often see them:

  • Along the slab edge where stucco meets the ground
  • Inside the garage at the base of a wall
  • Near expansion joints and small slab cracks
  • Around plumbing penetrations (under sinks, behind toilets, near the water heater)
  • At the edge of lanais where moisture hangs around

Because SWFL stays humid, moisture issues can act like a welcome sign. A small irrigation overspray, a leaky hose bib, or a slow plumbing drip can keep soil damp enough for steady activity.

A fast homeowner inspection that works well for stucco, block, and slab homes:

  • Walk the entire exterior slab line, especially shaded sides.
  • Check where mulch sits high against the wall (keep weep gaps visible).
  • Look at garage corners and the base of the water heater closet.
  • Scan lanai posts and bottom plates where rain blows in.
  • Inspect any wood fencing or landscape timbers touching the house.
  • If you're waterfront, check wood near the seawall for damp contact points.

Treatment expectations, relative cost, and a safety note

Treatment depends on the termite type and how spread out the activity is. Drywood problems often need more direct access to the wood, while subterranean problems focus on colony control in soil and along the structure.

Cost can vary a lot by home size, access, and the treatment method. For local context, Shield shares Cape Coral ranges in termite treatment costs in Cape Coral. In general, drywood termite work tends to run medium-to-high because access can be tough (and whole-structure options can be disruptive). Subterranean treatments often land low-to-medium for straightforward perimeter work, but can climb when drilling, multiple zones, or heavy moisture issues are involved.

One important reminder: in Florida, termite control products and application rules are strict for good reason. Don't experiment with off-label chemicals or foggers in walls or attics. Instead, document what you found, then bring in a licensed termite pro who can confirm the type and give a legal treatment plan.

Conclusion: spot the right clues, then act fast

Drywood vs subterranean termites isn't just a trivia question, it changes where you inspect and what you do next. Pellets and kick-out holes point to drywood activity in the wood itself. Mud tubes and moisture-linked signs point to subterranean termites moving up from the soil.

If you've seen either clue, take photos, avoid disturbing the area too much, and schedule a professional inspection. If you want to feel confident when comparing providers, use these questions to ask before hiring an exterminator in Cape Coral and apply them across Southwest Florida. Protecting your home is easier when you know exactly what you're dealing with, and termite signs rarely get better on their own .

Schedule a Free Inspection:

By Shield Pest Control February 23, 2026
If you've found a little pile of "sawdust" under a baseboard or windowsill, don't ignore it. In Cape Coral, that debris often points to carpenter ant frass , a clear clue that ants may be tunneling in damp, weakened wood. The good news is you can usually stop the worst damage...
By Shield Pest Control February 22, 2026
Spot a small widow spider near your lanai furniture or inside a stored bucket? In Cape Coral, that often points to the brown widow spider , a close cousin of the black widow that likes the same quiet, protected spots around homes. The good news is most people never get bitten....
By Shield Pest Control February 21, 2026
Seeing a big roach shoot out of a shower drain is the kind of surprise that sticks with you. In Cape Coral, it happens more than people think, especially in warm, humid months. The good news is this problem usually has a clear cause. American cockroaches chase moisture, easy f...
By Shield Pest Control February 20, 2026
If you've ever flipped on a lanai light in Cape Coral and watched a "palmetto bug" swoop in like it owns the place, you're not alone. In many neighborhoods, that flying roach is often an asian cockroach , not the big sewer roach people picture. Here's the good news: Asian cock...
By Shield Pest Control February 19, 2026
If you're seeing long, steady ant lines along baseboards, sinks, or soffits, you might be dealing with white-footed ants . In Cape Coral and across Lee County, these ants can show up fast, especially after warm rain or heavy watering. The good news is they're mostly a nuisance...
By Shield Pest Control February 18, 2026
A fire ant mound can look like a small problem until someone steps on it. Then it turns into a fast, painful mess. In Cape Coral, fire ant control takes a safety-first plan because our yards make ants comfortable. Sandy soil drains fast, St. Augustine grass holds moisture unde...
By Shield Pest Control February 17, 2026
If you've heard scratching above the ceiling at night, you're not alone. Roof rats Cape Coral homeowners deal with aren't just passing through. They're looking for safe cover, easy food, and a quick route to your attic. Palm trees often give them all three. Add a warm attic an...
By Shield Pest Control February 16, 2026
If you've seen ants moving like they've had too much coffee, you're not imagining it. Crazy ants in Cape Coral can form fast, messy-looking trails that seem to appear overnight, especially after warm rains and during the long, humid months. Here's the bottom line: most store-b...
By Shield Pest Control February 15, 2026
If you've spotted tiny specks on your bathroom counter that seem to move , you're not imagining it. In Cape Coral, a booklice bathroom problem often shows up as "dust" that won't stay put. The good news is booklice (also called psocids) don't bite people, don't damage your hom...
By Shield Pest Control February 14, 2026
Seeing one roach in a condo can feel like spotting smoke in a hallway. You might not see the fire, but you know it could be nearby. With German cockroaches , that instinct is usually right, especially in multi-unit buildings where pests move as easily as air and water. This gu...