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Pest Expert Formula C+ Silverfish Spray 5Ltr

£31.95 incl. VAT
£26.63 excl. VAT

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Qty From Qty To Unit Price
1 £31.95
2 5 £30.95
6 £29.95


Pest Expert Formula C+ Advanced Silverfish Killer Spray is the new and improved formulation of our bestselling original product, Formula C. Formula C+ Advanced is a ready-to-use triple action silverfish killer, with a long-lasting residual that maintains silverfish control for up to 12 weeks. Its unique combination of actives makes it the most powerful silverfish spray available to the amateur market, and the ultimate insecticide for anyone wanting fast and effective eradication of any size silverfish infestation.

  • Fast-acting: Rapid knockdown
  • Low-odour: No smell during or after use
  • Non-staining: Will not damage furnishings
  • Long-lasting: Residual maintains silverfish for up to 12 weeks
  • Increased coverage: 5L now treats up to 250m2 in a single application

Product information

As market leaders, our latest innovative formulation now incorporates two additional active ingredients. The first is pyriproxyfen, a ground-breaking insect growth regulator that cleverly works by halting the progression of the silverfish lifecycle development from juvenile to adult, resulting in an inability for the silverfish to reproduce, and therefore ensuring there is no increase in numbers.

The second is the addition of chrysanthemum cinerariaefolium extract, a natural pyrethrum, which when combined with the existing concentration of cypermethrin has a synergistic effect, helping to deliver an even faster knockdown and longer-lasting residual for ongoing control of all lifecycle stages.

With approval for both professional and amateur use, this professional-grade product can also be used safely in the home. Formula C+ Advanced is easy to use and can be applied directly to surfaces as it is water-based and non-staining, so will not cause any damage.

Being low odour and free from solvents, Formula C+ Advanced is perfectly suitable for use in homes with children and/or pets. provided they are kept out of the area being treated until all surfaces are dry (2-3 hours).

Formula C+ Advanced now offers an increased coverage of up to 50 sq m per litre, so a 5L canister will be sufficient to treat a surface area of up to 250 sq m.

One application should be enough for a successful silverfish treatment. However, to eradicate a particularly heavy silverfish infestation then a second application may be required.

As a broad-spectrum insecticide, Formula C+ Advanced is also highly effective against a wide range of flying and crawling insects including bed bugs, cockroaches, and fleas.

To achieve a thorough and professional application, we provide a free trigger hose sprayer with the 5 Litre bottle (one per order).

Directions for use

Lightly spray the affected areas with Formula C+. As silverfish favour cracks and crevices, silverfish eggs and nymphs are most often found around in small gaps, so administer a heavier application of insecticide to these areas. Leave the room for at least 2-3 hours to allow the area to dry. Avoid cleaning the treated areas for as long as possible as vacuuming will remove the protective residue.


For a more comprehensive treatment, applying Formula 'P' Silverfish Powder and fumigating the room using our Pest Expert Formula 'P' Foggers will eradicate silverfish moths.

For the best value for money please see our Silverfish Treatment Kits, which contain a combination of our best silverfish control products.

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