Premise SC is Envu's imidacloprid 30.5% SC termiticide. Mixed at 2.1 ml per litre of water, it is odourless and non-repellent: termites cannot detect it, carry it back to the colony and pass it on. SKUAS uses it to charge and refill every TermiPore reticulation system and for IS 6313 soil treatment.
| Maker | Envu (formerly Bayer Environmental Science) |
|---|---|
| Active ingredient | Imidacloprid 30.5% SC |
| Dilution | 2.1 ml per litre of water |
| How it acts | Non-repellent, slow-acting; termites carry it back and pass it to the colony (transfer or "domino" effect) |
| Odour | Odourless |
| Used for | Pre-construction and post-construction termite treatment |
| Source | Envu product page |
Subterranean termites live in colonies deep in the soil and send workers out to forage. Older repellent chemicals make those workers turn back at the treated soil, so the colony survives and keeps probing for an untreated gap.
Premise SC works differently. Termites cannot sense it, so foraging workers walk through treated soil and pick it up. Imidacloprid acts slowly on the termite nervous system, which gives the workers time to return to the nest and pass it on through grooming and food sharing. Envu calls this the domino effect. That way the chemical reaches termites in the nest that never touched the treated soil.
| Active ingredient | Type | How termites react | Smell |
|---|---|---|---|
| Imidacloprid (e.g. Premise SC) | Non-repellent | Cannot detect it; carry it to the colony | Odourless (per Envu) |
| Fipronil | Non-repellent | Cannot detect it; carry it to the colony | Varies by product |
| Bifenthrin | Repellent (pyrethroid) | Avoid treated soil and look for gaps | Varies by product |
| Chlorpyrifos | Organophosphate | Killed on contact; treated zone can be avoided | Strong, noticeable odour |
We mix Premise SC at the label dilution of 2.1 ml per litre and apply it at the IS 6313 dose of 5 litres of emulsion per m² of floor area:
| Floor area | Diluted emulsion | Premise SC concentrate |
|---|---|---|
| 500 sq ft | ≈ 230 litres | ≈ 490 ml |
| 1,000 sq ft | ≈ 465 litres | ≈ 980 ml |
| 1,500 sq ft | ≈ 695 litres | ≈ 1.5 litres |
| 2,000 sq ft | ≈ 930 litres | ≈ 2.0 litres |
| 3,000 sq ft | ≈ 1,395 litres | ≈ 2.9 litres |
| 5,000 sq ft | ≈ 2,325 litres | ≈ 4.9 litres |
| 10,000 sq ft | ≈ 4,645 litres | ≈ 9.8 litres |
According to Envu's own product material, Premise SC is GreenPro certified, has been evaluated by CSIR-CBRI, and imidacloprid is a termiticide recommended in IS 6313. These are the manufacturer's statements; you can read them on the Envu website.
Harmful if swallowed and very toxic to aquatic life, so it is handled only by trained applicators with PPE. In practice that means:
First charge of every new TermiPore system.
Refills every 2 to 3 years through the junction boxes.
Pre-construction soil treatment and existing buildings.
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