Florida's Termite Problem
Florida is home to the most destructive termite species in North America, and the state's warm, humid climate allows year-round termite activity. The USDA estimates Florida homeowners collectively spend over $1 billion annually on termite treatment and repairs. Two species dominate: Eastern Subterranean Termites (found statewide) and Drywood Termites (prevalent in South and Central Florida). The invasive Formosan Subterranean Termite — the most destructive termite in the world — has established populations in South Florida and is spreading north.
Understanding which species you're dealing with is the most important first step — the treatments are completely different.
Subterranean Termites vs. Drywood Termites
Subterranean termites live underground and build mud tubes to access wood above ground. They require contact with soil and moisture. Signs include mud tubes on foundation walls or inside wall voids, damaged wood that sounds hollow when tapped, and swarms of winged reproductives in spring (March–May). Colonies can number in the millions and cause structural damage rapidly.
Drywood termites live entirely within the wood they consume and don't require soil contact. They're often found in attic framing, door frames, and furniture. Signs include small piles of pellet-shaped frass (excrement) that resembles sand or sawdust, and hollow-sounding wood. Colonies are smaller (a few thousand) but multiple colonies can infest a structure simultaneously.
Subterranean Termite Treatments
Liquid soil barrier treatment is the most common approach. A licensed pest control company drills into the foundation and surrounding soil and injects termiticide (typically Termidor/fipronil or Altriset). This creates a treated zone that kills termites on contact and is transferred throughout the colony. Cost: $1,200–$3,500 for a typical home, with annual inspections often included. Protection typically lasts 5–10 years.
Bait stations (Sentricon, Advance) are installed around the perimeter and contain a slow-acting toxicant that worker termites carry back to the colony. They take longer to eliminate a colony (months vs. weeks for liquid) but require no drilling and are less disruptive. Cost: $1,000–$2,500 initial installation plus $300–$700 annual monitoring. Best for new construction prevention or situations where soil injection is impractical.
Combination treatment is often recommended for active infestations or Formosan termites: liquid treatment for immediate colony control plus bait stations for long-term prevention.
Drywood Termite Treatments
Fumigation (tenting) is the only treatment that reaches drywood termites throughout an entire structure. The home is sealed under a tent and filled with sulfuryl fluoride gas, which penetrates all wood and kills all life stages. Cost: $1,200–$3,500 for a typical Florida home (roughly $1.50–$3.50 per square foot). Residents and pets must vacate for 2–4 days. Fumigation kills 100% of existing termites but provides no residual protection — re-infestation is possible.
No-tent (spot) treatments are appropriate for localized infestations caught early. Options include: orange oil (d-limonene) injected into infested galleries; microwave or heat treatment of specific areas; or injectable Tim-bor (disodium octaborate). These are less disruptive and less expensive ($300–$1,500) but only effective for the treated area — whole-structure infestations require fumigation.
Termite Treatment Costs in Florida
- Liquid soil treatment (subterranean): $1,200–$3,500 one-time + $150–$350/year inspection
- Bait system (subterranean): $1,000–$2,500 install + $300–$700/year monitoring
- Fumigation (drywood): $1,200–$3,500 whole-home (sq ft dependent)
- Spot treatment (drywood): $300–$1,500 per area
- Annual pest control plans including termite coverage: $600–$1,800/year
Termite Prevention for Florida Homes
Prevention is far cheaper than treatment. Key steps for Florida homeowners:
- Eliminate wood-to-soil contact. Foundation wood should be at least 6 inches above grade. Wood mulch should not contact the foundation — use rubber mulch or gravel in a 12-inch buffer zone.
- Fix moisture problems. Subterranean termites need moisture. Fix plumbing leaks promptly, ensure gutters drain away from the foundation, and address condensation under the home.
- Pre-treat during construction. New construction should receive a soil pre-treatment before the slab is poured — required by Florida Building Code in most termite-prone areas.
- Schedule annual inspections. Florida pest control contracts typically include annual termite inspections. A WDO (Wood-Destroying Organism) inspection ($75–$150) is also required for most real estate transactions.
- Use termite-resistant materials. Pressure-treated lumber (ACQ or CA-B treated), concrete block, steel framing, or engineered wood products with borate treatment significantly reduce risk.
Choosing a Termite Control Company
Florida pest control companies must be licensed by the Florida Department of Agriculture and Consumer Services (FDACS). Verify the company's license at FDACS.com. Ask for a written termite bond or warranty — reputable companies provide retreatment guarantees, and some offer repair coverage up to a set dollar amount if termites return and cause damage.
Annual or continuing service agreements are generally worth the cost in Florida. A $400–$700/year contract provides ongoing monitoring, retreatment rights, and documentation that satisfies buyers and their lenders during real estate transactions. A WDO clearance letter from your pest control company is a standard requirement in most Florida home sales.