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Pest Expert Formula C+ Spider Killer Spray 1L

£11.95 incl. VAT
£9.96 excl. VAT

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Pest Expert Formula C+ Advanced Spider 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 spider, with a long-lasting residual that maintains spider control for up to 12 weeks. Its unique combination of actives make it the most powerful spider spray available to the amateur market, and the ultimate insecticide for anyone wanting fast and effective eradication of any size spider infestation.

  • Fast-acting: Rapid knockdown
  • Low-odour: No smell during or after use
  • Non-staining: Will not damage any household furnishings
  • Long-lasting: Residual maintains spider control for up to 12 weeks
  • Increased coverage: 1L now treats up to 50m2 in a single application

Pest Expert Spider Killer Spray 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 spiders’ lifecycle development from juvenile to adult, resulting in an inability for the spider 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 homes, garages and garden sheds as it is water-based and non-staining, so will not cause any damage.

Each 1L trigger-spray is sufficient to treat an area of up to 50m2 and one application should be enough for a successful spider treatment.

Directions for use

Lightly spray Formula C+ in areas where you’ve seen spiders. It can be sprayed onto timbers in the loft, in garden sheds or any areas that can take a light misting of water.


For a comprehensive treatment we advise using Formula C+ alongside our smoke bombs and powder. Please see our Pest Expert Spider Killer Kit for more information.

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