Two actives. Both GB BPR authorised. Both carry zero COSHH classification. And one of them, by mechanism, cannot be out-evolved. That's the difference between treating an infestation and managing a chemistry-supplier relationship.
An adulticide that cannot be out-evolved, paired with an insect growth regulator that prevents the next generation from reaching adulthood. Together they collapse a colony in roughly ninety days.
Two complementary mechanisms — one against existing adults, one against the next generation. Neither needs the other to function, but together they close the lifecycle.
Mechanical desiccation. Adults and nymphs die within 72 hours of contact at harbourage points. No sub-lethal escape.
Reproductive suppression. Eggs cannot mature. The colony does not regenerate. 90-day residual from one placement.
Adult kill mechanically. Reproduction suppressed chemically. No resistant survivors to repopulate from.
Synthetic chemistry attacks a target inside the insect. Mechanical chemistry abrades the insect's outer wax layer. There is no genetic adaptation against the second.
Synthetic pyrethroids work by binding to voltage-gated sodium channels in the insect's nervous system. That binding site can mutate. In the UK, it has — the kdr (knockdown resistance) mutation is now genetically dominant across virtually all sampled bed bug populations. Some studies have measured the same population requiring fifty-five to two thousand times the label-rate concentration to achieve 90% mortality.
A diatom skeleton is not a binding site. It is a physical edge. There is no analogue to the kdr mutation against a desiccation mechanism. The insect cannot evolve a thicker cuticle in a single generation, and the cuticle is the only target.
The COSHH classification doesn't just affect the documentation file — it determines what your site has to do during and after a treatment.
No resident displacement. No exclusion of resident-accessible areas. Treatment timing follows the resident activity schedule, not a re-entry interval.
Treatment can run during service hours without contamination concerns. No closure of the kitchen. No EHO question about chemical residues near food contact surfaces.
Room can be re-let immediately. No 4-hour re-entry interval. No "treatment notice" left for housekeeping. The treatment record is the only artefact.
Pyrethroid spray applies one tool to every job. Zero-COSHH chemistry needs a specialist toolkit — and our technicians carry it.
Bellows or pump mechanism. Delivers diatomaceous earth into wall voids, riser cavities, and skirting runs without airborne dispersal. Standard issue for every GreenTech technician.
Syringe-precision placement of insecticidal gel into cracks adjacent to harbourage. Used in Helix for the IGR component, with horizontal-transfer dynamics that reach voids dust cannot.
Charged droplets attract to surface edges and undersides — the harbourage points conventional sprayers miss. Used selectively where surface coverage matters more than crevice penetration.
The audit-ready compliance pack is unchanged whether you treat with pyrethroids or with InsectoSec DE. The site experience isn't.