Open soil perimeter
Foundation surrounded by mulched beds and lawn — the easiest scenario. Trench, apply, backfill.
Termidor® HE liquid soil treatment is the workhorse subterranean control method in Florida — a continuous chemical barrier applied to the soil around your foundation that termites cannot detect, cannot avoid, and unwittingly distribute through the colony via trophallaxis. Ten years of residual protection in Pompano’s subtropical soil. Visit Pompano Termite Control for the company background.
Up until 2000, every liquid termiticide on the market was repellent. The chemistry killed termites on direct contact and the surviving colony detected the treated zone and rerouted around it. That meant any gap in the treatment — a hairline crack in the slab, a missed inch of trench, a settled section of soil — became a re-entry route the entire colony eventually found.
Termidor® (fipronil) was the first non-repellent termiticide to gain widespread Florida deployment. Termites cannot detect it. They walk through the treated zone freely, pick up the active ingredient on their cuticles, return to the colony, and pass it through trophallaxis (mouth-to-mouth food sharing — the central social behavior of subterranean termites).
That difference completely changes the math:
Termidor® HE (“HE” = High Efficiency) is the current formulation, requiring half the water volume of the original Termidor® SC and offering improved soil dispersion in clay and high-organic substrates. It is what we mix and apply on every job.
Foundation walked, perimeter measured. AC condenser pads, irrigation lines, planters, hardscape penetrations flagged for drill-and-treat workarounds.
Continuous 6-inch deep trench excavated against the foundation wall. Hardscape sections get pilot-drilled at 12-inch intervals.
Termidor® HE mixed at 0.06% finished concentration. 4 gallons of finished solution applied per 10 linear feet of trench, soaked into the soil.
Treated soil backfilled into the trench. Application photographed, GPS-tagged at the corners and at each hardscape penetration for the warranty record.
The protocol assumes continuous open soil against the foundation. Real Pompano homes rarely have that — most have a mix of mulched beds, concrete patios, paver walks, AC condenser pads, irrigation lines, and screened-in pool decks. Each obstacle requires a specific workaround:
None of these workarounds reduce the protection level. The Termidor® HE barrier reaches the same depth and concentration regardless of what was above the soil before treatment.
Foundation surrounded by mulched beds and lawn — the easiest scenario. Trench, apply, backfill.
Termidor® HE kills foragers within weeks vs Sentricon’s several months. Useful when active mud tubes are visible and you want immediate suppression.
One-time application, 5–10 year warranty. No annual monitoring contract.
For multi-thousand-sq-ft properties with active subterranean tubes, the per-linear-foot economics favor Termidor® at scale.
Post-construction Termidor® barrier maintains continuity with a pre-construction borate or soil-applied barrier from the original build.
For Formosan and Asian subterraneans, Termidor® liquid is paired with Sentricon® baiting — liquid handles the perimeter foragers, bait collapses the colony.
Termidor® HE is the default. Altriset® is the substitute. Altriset® uses chlorantraniliprole — a chemistry that targets the muscle-contraction system in termites (and is selective for arthropods that share that pathway). It holds the EPA reduced-risk classification, has a far lower toxicity profile for mammals and bees, and is approved for application around organic gardens.
The trade-off is speed. Altriset® takes longer to knock down the colony — workers stop feeding within hours, then die over several days — and the labeled residual is shorter than Termidor® HE’s ten-year benchmark. We recommend Altriset® for households with:
Pricing typically runs $2 to $3 higher per linear foot than Termidor® HE.
| Treatment | Unit price | Typical home cost | Warranty |
|---|---|---|---|
| Termidor® HE liquid barrier | $7 – $12 / linear ft | $1,400 – $2,800 | 5–10 yr retreatment |
| Altriset® reduced-risk | $9 – $14 / linear ft | $1,800 – $3,200 | 5 yr retreatment |
| Combination w/ Sentricon® (Formosan) | By quote | $2,500 – $4,500 | 10 yr + lifetime bait |
| Drill-and-treat hardscape (per hole) | $8 – $15 / hole | Variable | Included |
A continuous chemical barrier applied to the soil around the foundation. 6-inch trench, Termidor® HE mixed at 0.06%, 4 gallons of finished solution per 10 linear feet. Termites walk through the treated zone unable to detect it, carry the active ingredient back to the colony, and spread it through trophallaxis.
10+ years per manufacturer and third-party testing in subtropical Florida conditions. Backed by a 5-year retreatment warranty extendable to 10 years on annual inspection contract.
$7–$12 per linear foot. Average 160-LF home: $1,400–$2,800. Altriset® reduced-risk substitute: $9–$14 per linear foot ($1,800–$3,200 typical).
Applied below grade and immediately backfilled — no surface contact. For households with koi, chickens, or extensive pollinator plantings near the foundation, we substitute Altriset® (EPA reduced-risk classification).
4–6 hours of on-site work for an average single-family home. You do not vacate. Lawn and beds disturbed minimally — only the 6-inch trench against the foundation.
Mulched beds and lawn recover within weeks. Plants directly against the foundation may need to be moved temporarily if root systems extend into the trench area; we identify these during the inspection.
Yes — and we do, for Formosan and Asian subterranean infestations. Termidor® HE handles the perimeter foragers within weeks, Sentricon® baiting collapses the colony over the following months. This combination protocol is the most aggressive subterranean approach we offer.
Free inspection confirms species, measures the perimeter, identifies hardscape workarounds, and quotes the linear-foot price in writing — before any soil moves.