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Drywood termites (Cryptotermes and Incisitermes) live entirely inside wood without contact with soil — different from subterranean termites. They are common throughout coastal Florida. Here is the identification and treatment guide.
How to identify drywood termites
- 3/8 to 1/2 inch long as adults.
- Reproductive swarmers: dark brown to black with smoky wings.
- Workers: cream-colored, similar to subterranean.
- Live entirely within wood, no soil contact.
- Most active in late summer (August-September swarming).
Signs of drywood termite infestation
- Frass (droppings) — distinctive 6-sided pellets the size of poppy seeds. Often piled below infested wood.
- Kick-out holes — small holes in wood where termites push out frass.
- Discarded wings near windowsills after swarming.
- Hollow-sounding wood.
- Surface blistering in painted wood as galleries develop near surface.
Where drywood termites live
- Door and window frames.
- Attic rafters and roof structures.
- Furniture (especially antiques).
- Hardwood floors.
- Decorative wood trim.
Treatment options
Option 1: Spot treatment with Bora-Care or Termidor
For localized infestations, drill into wood and inject treatment directly. Most effective for early-stage discoveries in accessible wood.
Option 2: Tenting (fumigation) for widespread infestations
Whole-house tenting with sulfuryl fluoride. Required for severe drywood infestations throughout structure. $2,500-$5,000 typical Florida cost. Hire licensed fumigation specialists.
Option 3: Heat treatment
Whole-structure heating to 140°F+ for several hours. Chemical-free alternative to fumigation. Limited Florida providers; cost similar to tenting.
Option 4: Liquid Taurus SC (limited use)
Less effective on drywood termites than subterranean. May work for very localized accessible infestations.
When DIY makes sense
For a single small piece of infested furniture or a localized spot in accessible wood, DIY spot treatment can work. For anything in structural wood or multiple infested areas throughout the home, hire a licensed fumigation specialist.
Verdict
For drywood termites, scope determines treatment. Localized = DIY spot treatment. Widespread = professional tenting or heat treatment. Annual professional inspection is the smart move for Florida homes especially in coastal areas.
Reminder: Always read product labels and follow manufacturer safety instructions. For dangerous pests or large infestations, hire a licensed professional.