Drywood Termite Treatment Miami — Spot Treatment & Borate Injection

Q: How do I know if I have drywood termites in Miami?

The most common signs of drywood termites in Miami are: small piles of fecal pellets (frass) — hexagonal, about 1mm, tan to dark brown — on surfaces below infested wood; small kickout holes (1-2mm) in wood surfaces; and occasionally swarmers (winged reproductives) emerging from wood in spring or fall. Unlike subterranean termites, drywood termites leave no mud tubes.

Q: How are drywood termites different from subterranean termites in Miami?

Drywood termites live entirely within wood, require no soil contact, and are identified by frass pellets and kickout holes. Subterranean termites live in the soil and enter structures through mud tubes or direct wood-soil contact. Miami homes can have both simultaneously — a WDO inspection identifies which species are present and where.

Identification

Identifying Drywood Termites in Miami

Western Indian drywood termites (Cryptotermes brevis) are the dominant drywood species in Miami-Dade. Unlike subterranean termites, they require no soil contact — they establish colonies entirely within existing dry wood, making them common in attic framing, window frames, door headers, roof eaves, and wood furniture.

The most reliable identification sign in Miami homes is frass — tiny hexagonal fecal pellets, approximately 1mm long, ranging from tan to dark brown depending on the wood being consumed. Frass accumulates in small conical piles on surfaces below active galleries. Homeowners often discover it first on windowsills, on attic floors below the rafters, or on shelving beneath infested wood members.

Secondary signs include small kickout holes in wood surfaces (1–2mm diameter, where termites push frass out) and, during swarming season, shed wings near window frames and light fixtures. Miami's drywood swarming season peaks August through October, though the climate supports year-round activity.

Drywood vs Subterranean — Key Differences

Drywood Termites

✓ Live inside wood — no soil needed
✓ Frass (pellets) is the main sign
✓ Kickout holes in wood surfaces
✓ Small colonies (hundreds to thousands)
✓ Treated with foam injection or borate

Subterranean Termites

✓ Live in soil — must maintain ground contact
✓ Mud tubes are the main sign
✓ Damaged wood with soil packed inside
✓ Massive colonies (millions for Formosan)
✓ Treated with soil barrier or bait stations

Common Miami Locations

Where Drywood Termites Are Found in Miami Homes

Attic framing — roof trusses, rafters, and sheathing in homes built before 1990 are the most common infestation site
Window and door frames — painted wood frames mask frass and kickout holes; common in Art Deco buildings
Exterior fascia and eaves — exposed wood on the roofline exposed to moisture then drying cycles
Wood furniture — especially antique pieces with unfinished wood sections
Garage door headers and jambs — common entry point for new colony establishment

Call for Same-Day Inspection

Treatment Methods

How We Treat Drywood Termites Without Fumigation

Two proven localized treatments — used individually or combined depending on infestation scope and wood accessibility.

Primary Treatment

Termidor Foam Injection

Termidor (fipronil) foam is injected directly into drywood termite galleries through small drill holes in the infested wood. The foam expands to fill the gallery network, contacting termites directly. Termites that survive initial contact carry fipronil back to nestmates through normal grooming behavior — the "transfer effect" eliminates the colony from within.

Drill holes are small (1/8") — patchable with wood filler
No re-entry wait — safe immediately after treatment
Effective in attics, window frames, door headers, eaves
Colony elimination typically within 1–3 weeks

Preventive + Active

Tim-bor Borate Treatment

Tim-bor (disodium octaborate tetrahydrate) is a borate compound applied as a solution to bare or exposed wood surfaces. It penetrates and binds to wood, disrupting termite digestive enzymes and killing termites that consume or contact treated wood. Unlike foam injection, borate provides lasting residual protection against future infestation.

Penetrates wood — provides years of residual protection
Low toxicity to mammals — safe around pets and children
Ideal for new construction, attic framing, bare lumber
Effective against both drywood termites and wood-boring beetles

When spot treatment is not sufficient: If a WDO inspection reveals drywood activity in multiple inaccessible locations — inside wall framing, inside structural beams, throughout roof sheathing — spot treatment alone cannot reach all colonies. In those cases, we recommend tent fumigation. We will tell you honestly which approach is right for your situation.

Treatment Process

What to Expect During Drywood Termite Spot Treatment

Inspection & Colony Mapping

We inspect all accessible areas for drywood termite evidence: frass accumulation, kickout holes, wing evidence, and probe suspected wood for hollow galleries. We map all active infestation sites before treatment begins — treatment without thorough inspection risks missing colonies.

Foam Injection Into Active Galleries

For each active infestation site, we drill small 1/8" holes through the wood surface into the gallery network and inject Termidor foam under pressure. The foam expands to fill galleries, contacting the colony directly. Drill holes are patched with wood filler or colored plugs after treatment.

Borate Application on Bare Wood (Where Accessible)

Where bare wood is accessible — attic framing, exposed structural lumber, untreated fascia — Tim-bor borate solution is applied by brush or spray. This treats any additional colonies within the treated wood and creates a protective barrier against future infestation.

Treatment Documentation

We provide a written treatment record listing all treated locations, products used, and application methods. This documentation is useful if you later need to demonstrate treatment history for a WDO report or real estate transaction.

Follow-Up Monitoring

Drywood termite colony elimination with Termidor foam typically takes 1–3 weeks as the transfer effect propagates through the colony. We schedule a follow-up inspection 30–60 days after treatment to confirm frass production has ceased and no new activity has appeared. New frass after 60 days in a previously treated area may indicate a separate undetected colony.

Reviews

Miami Homeowners on Drywood Termite Treatment

"I'd been finding those little pellet piles under my window frames for months. Another company wanted to fumigate the whole house immediately. Miami Pest Control Pros inspected first, determined the activity was confined to two window frames and the garage door header, and did the foam injection in a single visit. Frass stopped within three weeks."

Patricia G.Homeowner, Coconut Grove

"We had drywood termites in the attic confirmed by our WDO inspection. The technician accessed the attic and did a combination treatment — foam into the active galleries he found, plus Tim-bor borate on all the bare framing. Treatment took about two hours. We didn't have to move out, didn't have to prep anything special. Exactly what we needed."

Hector N.Homeowner, Pinecrest

"I appreciated that they were honest about when fumigation is and isn't necessary. They told me upfront: your infestation is localized, spot treatment should work. Didn't push me to do something bigger and more expensive. That kind of honesty is rare. The treatment worked — six months later and not a single frass pellet."

Monica O.Homeowner, South Miami

FAQ

Drywood Termite Treatment Questions

How do I know if I have drywood termites in Miami?

The most reliable sign is frass — small hexagonal fecal pellets, about 1mm long, tan to dark brown, accumulating in conical piles on surfaces below infested wood. Secondary signs include small kickout holes (1–2mm) in wood surfaces where termites push frass out, and shed wings near windows and light fixtures during swarming season (August–October in Miami). Unlike subterranean termites, drywood termites leave no mud tubes.

Can drywood termites be treated without fumigation in Miami?

Yes, when the infestation is localized to accessible wood members. Termidor Foam injection into drywood galleries eliminates colonies on contact and through trophallaxis (termite grooming). Tim-bor borate applied to bare wood kills termites and provides residual protection. Spot treatment is appropriate for localized infestations — fumigation is indicated when activity is widespread or in inaccessible structural areas throughout the home.

How long does drywood termite spot treatment take?

A typical drywood termite spot treatment visit in Miami takes 1–3 hours depending on the number of infested areas. There is no mandatory re-entry waiting period — you can remain in the home during treatment of exterior areas and return immediately to interior treated areas after the foam sets. Colony elimination typically takes 1–3 weeks as the transfer effect works through the colony.

What is the drywood termite season in Miami?

Unlike northern states, drywood termites are active year-round in Miami's subtropical climate — there is no winter dormancy period. Swarming (when winged reproductives emerge to establish new colonies) typically peaks August through October in South Florida. Treatment is equally effective in any season and should not be delayed to wait for a "right time of year."

Does Termidor Foam work on drywood termites?

Yes. Termidor (fipronil) foam expands to fill termite galleries after injection through small drill holes in infested wood. Termites that contact the foam carry the active ingredient back to nestmates through normal grooming behavior — a "transfer effect" that eliminates the colony over 1–3 weeks. It is one of the most effective localized treatments available for accessible drywood termite infestations.

How are drywood termites different from subterranean termites in Miami?

Drywood termites live entirely within wood — no soil contact needed — and are identified by frass pellets and kickout holes. Subterranean termites live in the soil and enter structures through mud tubes or wood-soil contact, forming massive colonies (especially Formosan, which can exceed 1 million workers). Miami homes can have both species simultaneously. A WDO inspection identifies which species are present and guides the correct treatment approach for each.

Drywood Termite Treatment in Miami — No-Tent Spot Treatment for Localized Infestations