Eastern subterranean termites (Reticulitermes flavipes) are active year-round in Polk County soils. Unlike drywood termites, which live entirely within wood, subterranean termite colonies live underground and travel up into structures via mud tubes — making them detectable through systematic foundation inspection. Call the number below to be connected with an FDACS-licensed termite operator for inspection, treatment recommendation, and ongoing protection.
The dispatched operator will inspect the property’s foundation perimeter, slab penetrations, bath traps, and any wood-to-soil contact points, identify active subterranean termite activity, and recommend either a liquid termiticide barrier or in-ground bait station system based on site conditions.
Why Polk County Soil Supports Year-Round Subterranean Termite Activity
Polk County’s soil and climate profile creates ideal conditions for eastern subterranean termite colonies:
Sandy soils. Polk County’s predominantly sandy soils (Astatula, Candler, Pomello, Tavares series in much of central Polk) provide soft, well-drained substrate that subterranean termites tunnel through with minimal effort. Heavier clay soils (more common in parts of west Polk near Plant City) slow termite movement but don’t prevent colony establishment.
Soil moisture. Polk County’s 50–55 inches of annual rainfall, abundant freshwater lakes, retention ponds, and irrigation systems maintain consistent soil moisture year-round — particularly important for subterranean termites, which die quickly when desiccated.
Soil temperature. Subterranean termite colonies are most active when soil temperature is above 50°F. Polk County soil temperatures rarely drop below 60°F even in coolest winter months — meaning termite biological activity continues 12 months a year.
Subterranean termite swarming season. Polk County eastern subterranean termites swarm February through May, peaking in March. Swarming follows the first warm rains of the season — winged reproductives emerge from established colonies, fly short distances, shed wings, pair up, and attempt to establish new colonies.
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Cooperative Extension Service maintains research and detection records confirming year-round subterranean termite presence throughout Polk County.
How to Identify Subterranean Termite Activity
The primary subterranean termite indicators in Polk County homes:
Mud tubes. Pencil-width tubes of mud and termite-secreted material, used by workers to travel between soil and wood while avoiding desiccation. Found on:
- Foundation walls (interior and exterior)
- Slab edges where slab meets stucco or siding
- CBS-block wall surfaces
- Crawl space piers and beams (in non-slab construction)
- Interior wall surfaces (when termites have moved up inside wall void)
- Around plumbing penetrations
- Garage walls
Active mud tubes will have moist mud at the tip — fresh termite construction. Dry, abandoned tubes may indicate past activity that has resolved or moved.
Swarmers and discarded wings. Late winter through spring (February–May), winged reproductive subterranean termites emerge, typically after rain. They are typically:
- ~3/8 inch long (about the size of a flying ant, with which they’re often confused)
- Black body with pale gray to translucent wings of equal length
- Wings noticeably longer than the body
- Often emerge from cracks in concrete slab, around windows, around door frames, or near light fixtures
After dispersal flights, swarmers shed wings — piles of discarded wings near windows or under light fixtures are a strong indicator.
Damaged wood. Subterranean termite damage typically follows the wood grain — galleries packed with mud/soil, distinct from drywood damage (which is cleaner, often empty galleries with frass).
Hollow-sounding wood. Tap structural wood members with a screwdriver handle — termite-damaged wood may sound hollow or papery. Wood that crumbles under light pressure indicates significant damage.
Distinguishing from flying ants. Subterranean termite swarmers have: straight antennae (ants have elbowed), equal-length wings (ants have unequal), and broad waist (ants have pinched waist). When in doubt, save a few swarmers in a plastic bag and show them to the dispatched inspector.
Treatment Approaches the Dispatched Operators Will Use
Liquid Termiticide Barrier — Most Common in Polk County
The standard subterranean termite treatment. Liquid termiticide is applied to soil around foundation perimeter, creating a treated zone that termites cannot cross without being affected. The treatment kills termites that pass through and disrupts colony foraging.
Common active ingredients in Polk County:
- Fipronil (Termidor SC, Taurus SC) — non-repellent, transfers between termites in colony. Most popular Polk County termiticide.
- Imidacloprid (Premise 75WP) — non-repellent, slow-kill, colony elimination via transfer.
- Bifenthrin (Talstar Pro, Bifen XTS) — repellent, faster knockdown but less colony transfer.
Application method:
- Trenching — a shallow trench is dug around foundation perimeter, termiticide applied, trench backfilled.
- Sub-slab drilling — small holes drilled through slab at expansion joints, plumbing penetrations, and bath traps; termiticide injected into soil below slab.
- Bath trap injection — separate treatment of the slab cutouts behind tubs/showers, a primary subterranean termite entry route in Florida slab construction.
Typical Polk County cost: $1,200–$3,500 for single-family home, depending on linear foundation footage and structure complexity. Single-day treatment.
Warranty: Typically 1-year renewable with annual re-inspection. Multi-year bonds available.
Re-treatment intervals: Liquid barriers typically need re-application every 5–10 years.
In-Ground Bait Station System
Stations installed at 10–20 foot intervals around exterior perimeter, monitored quarterly. Bait is replaced when active termite feeding is detected. Workers carry bait back to colony, where it spreads — ultimately eliminating the colony.
Major brands in Polk County:
- Sentricon Always Active — pre-baited with novaluron, continuously active
- Trelona ATBS — active bait technology system
- Recruit HD — Dow’s high-density bait
Pros:
- Less invasive than liquid barrier (typically no slab drilling)
- Provides ongoing colony elimination + monitoring
- Visible monitoring stations show whether termite pressure is present
Cons:
- Higher long-term cost (initial install + annual monitoring)
- Slower initial action than liquid barrier
Typical Polk County cost: $1,500–$3,000 initial installation + $200–$500/year ongoing monitoring.
Pre-Construction Pretreatment
For new construction, liquid termiticide applied to soil before slab pour. Required by Florida Building Code for residential construction.
Typical Polk County cost: $400–$1,200 depending on slab size.
Treatment Areas Specific to Polk County Slab Construction
Polk County’s predominantly slab-on-grade residential construction creates several distinctive subterranean termite entry pathways the dispatched inspector will check:
- Bath trap cutouts — slab cutouts behind tubs and showers, a primary entry route
- Plumbing penetrations — water entry/exit through slab
- Expansion joints — joints in slab pour where termites can enter
- Stem wall to slab junction — perimeter foundation-to-slab transition
- CBS-block wall cores — cells in concrete block walls can serve as termite highways
- Slab edges where slab meets stucco or siding — common above-grade entry route
Effective subterranean termite treatment addresses all these entry pathways.
When To Call
- Mud tubes on foundation walls, slab edges, or interior walls
- Subterranean termite swarmers inside the home (February–May)
- Piles of discarded wings near windows or light fixtures
- Hollow-sounding or crumbling wood
- WDO inspection requirement for real estate closing
- Annual termite bond renewal inspection
- New construction pre-treatment
Cost Expectations
Full termite treatment cost guide →
Typical Polk County subterranean termite pricing:
- Liquid barrier: $1,200 – $3,500
- Bait station system (install): $1,500 – $3,000
- Bait monitoring (annual): $200 – $500
- WDO inspection: $100 – $250
- Termite bond renewal: $150 – $400/year
Related Pages
- Termite Treatment in Lakeland
- Drywood Termite Treatment
- WDO Inspection in Lakeland
- Termite Treatment Cost in Lakeland
- Termite Swarming Season Florida
Service Areas
All Polk County: Lakeland · Winter Haven · Bartow · Plant City · Lake Wales · Auburndale · Haines City · Mulberry · Davenport · Polk City