Florida is the worst termite state in the country. Three of the four most destructive termite species in North America — eastern subterranean, Formosan, and West Indian drywood — are all established in the Panhandle. By the time most homeowners notice termites, the active colony has been at work for 12 to 36 months.
This guide is honest about what DIY can and cannot do. You can prevent termite infestations with consistent perimeter treatment. You generally cannot eliminate an active subterranean termite infestation without a licensed pest control company. Here is the line, and how to handle each side of it.
The three Panhandle termite species
Eastern subterranean termite
By far the most common. Lives in the soil. Builds mud tubes from the ground up to access wood structures. Tubes are pencil-thin tan-colored tunnels you can find on foundation walls, slab cracks, and crawl space joists. Causes about 80% of termite damage in the Panhandle.
Formosan termite (super-termite)
Also subterranean. Originally from Asia, established in the Gulf states since the 1960s. Builds aerial nests inside walls (carton nests) and can survive without ground contact if there is enough moisture. Colonies are 10x larger than native subterranean termites — up to 7 million individuals — and damage accumulates much faster.
West Indian drywood termite
Lives entirely inside dry, sound wood. No mud tubes, no soil contact. Common in older Panhandle homes. The signature evidence is small piles of frass — six-sided pellets the size of poppy seeds — that look like sawdust until you look closely.
Signs you have termites
Most homeowners discover termites three ways:
- A swarm. Both subterranean and Formosan termites release winged reproductives in spring (March to May in the Panhandle). If you see a cloud of small flying insects coming out of a wall, soffit, or windowsill, you have an established colony nearby. Swarmers shed their wings quickly. A pile of identical wings on a windowsill is the smoking gun.
- Mud tubes. Found on foundation walls, especially in garages, crawl spaces, and along exterior block. About the diameter of a #2 pencil. Break one open. If it is repaired the next day, the colony is active.
- Frass piles (drywood termites). Six-sided pellets accumulating in piles below ceilings, baseboards, or window casings. Means drywood termites are actively eating wood above the pile.
Less obvious signs: bubbled paint, doors and windows that suddenly stick, hollow-sounding wood when tapped, and visible damage when you pry off baseboards or trim.
What DIY can do: prevention
Subterranean termites need three things to colonize a structure: soil contact, moisture, and an unsealed entry point. Eliminate any one and you can prevent infestation.
Moisture management
- Grade soil away from foundation — minimum 6 inches of fall over 10 feet
- Direct downspouts at least 4 feet from the foundation
- Fix all plumbing leaks immediately, especially in crawl spaces
- Reduce indoor humidity (target 50% or below)
- Repair leaking AC condensate lines and drain pans
- If you have a crawl space, install a vapor barrier and check for standing water after heavy rain
Wood-to-soil contact
- No bark mulch within 12 inches of the foundation. Use rock or rubber mulch in that zone
- Firewood stacked at least 20 feet from the house, raised off the ground
- Remove dead tree stumps within 30 feet of the foundation
- Cut tree branches and shrubs back so they do not contact the siding or roof
- Check fence posts, deck posts, and porch supports — wood-to-soil contact here is a freeway in
The DIY perimeter treatment
The professional standard for subterranean termite prevention is a soil treatment with fipronil. The product most often used by licensed companies is Termidor SC. The same active ingredient is available to homeowners as Taurus SC — same fipronil concentration, same labeled use rate, sold without a license requirement.
Application is involved but straightforward. You dig a 6-inch wide, 6-inch deep trench around the entire foundation. Mix Taurus SC at 0.06% (about 0.8 oz per gallon) and apply 4 gallons of solution per 10 linear feet of trench. Backfill with the displaced soil, which traps the treated zone underground. Termites foraging from soil cannot cross the treated zone without picking up the fipronil and carrying it back to the colony.
This treatment lasts approximately 8 to 10 years if undisturbed. The DIY cost: about $150 in product for an average home, plus a Saturday of digging.
Realistic disclosure: Most homeowners will not do this themselves. Trenching around an entire foundation, working around plumbing penetrations, AC line sets, gas lines, and concrete porches, while remembering to keep treatment continuous around the entire perimeter — it is a real project. If you have the will, the products work as well as a pro application. If not, this is the one place where paying a pro is genuinely worth it for many people.
What DIY cannot do: active subterranean infestations
If you found mud tubes and the colony is active, do not try to handle it yourself. Here is why:
- Subterranean termite colonies extend 100 to 300 feet from the structure. Treating the visible tubes leaves 99% of the colony untouched.
- Whole-structure treatment requires injecting termiticide into soil under slabs, around bath traps, and inside wall voids — work that requires drilling concrete, accessing crawl spaces, and using equipment most homeowners do not own.
- The bait-station approach (Sentricon, Trelona, Advance) requires placing 10-15 stations on a schedule and monitoring them quarterly. Effective but slow (6 to 18 months for colony elimination).
- Liability: if you DIY and the home is later resold, you have no termite warranty to transfer. A licensed company gives you a renewable bond that follows the property.
For an active subterranean infestation, get three quotes from licensed Florida pest control companies. Ask whether they use liquid termiticide (Termidor, Premise) or bait (Sentricon). Both work; liquid is faster, bait is less invasive. Expect $1,200 to $2,500 for an average home, with annual renewal contracts of $200 to $400.
Drywood termite specific advice
Drywood termites do not contact soil, so soil treatment does nothing. Localized DIY for drywood includes:
- Spot treatment with borates. Drill small holes into the affected wood every 6 inches and inject borate solution. Effective for small, isolated drywood infestations in accessible furniture, trim, or framing.
- Replace and treat. If the affected wood is removable (a damaged door frame, a section of trim), cut it out, dispose of it, and apply borate to the surrounding wood before replacing.
For widespread drywood termite infestation — multiple frass piles in different rooms, swarms inside the house — the only reliable treatment is whole-structure fumigation. That requires a licensed fumigator, a tarp covering the entire home, and 3 days of vacating. Pricing varies by home size, typically $1,500 to $4,000.
Annual termite inspection: do it yourself
Even with a pro contract, walk the property twice a year (spring and fall). Look for:
- Mud tubes on foundation walls, especially garage walls and crawl space piers
- Swarmer wings on windowsills
- Frass piles inside or below trim and baseboards
- Sticking doors and bubbled paint
- Hollow-sounding wood (tap with a screwdriver handle)
- Unexplained sawdust below window casings
The earlier you find it, the cheaper it is to fix.
The honest summary
For Florida Panhandle homeowners, the right termite plan is:
- Year 1 — DIY perimeter Taurus SC trench treatment OR pay a licensed pro for the same work
- Year 2 onward — annual self-inspection in spring and fall
- Maintain moisture management and wood-to-soil separation continuously
- If active termites appear — call a licensed company. This is not a DIY job at that stage
Termites cause more damage to U.S. homes than fires and storms combined. In Florida specifically, every home will be exposed to termite pressure within 5 years of construction. The cost of prevention is dramatically lower than the cost of repair plus treatment after damage.