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Pest Expert Formula C Cockroach Spray 5L

£34.95 incl. VAT
£29.13 excl. VAT

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2 5 £32.95
6 £29.95


Pest Expert Formula 'C' Cockroach Spray is a fast-acting insecticide with a long-lasting residual that maintains cockroach control.

  • Fast-acting cockroach spray
  • Kills both German and Oriental cockroaches
  • Low-odour and solvent-free
  • Long-lasting residual maintains control for up to 12 weeks
Product information
Pest Expert Formula 'C' is a highly-effective insecticidal cockroach spray that offers both fast-acting and long-lasting cockroach control. The most powerful cockroach killer available to the amateur market, as well as achieving a rapid knockdown it also leaves a protective residue that continues to kill cockroaches for up to 12 weeks after application.

Formula 'C' is low-odour and free from solvents, so it 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).

The active ingredient in Formula 'C' is the powerful broad spectrum insecticide cypermethrin (0.1% w/w), which is also effective against a wide range of flying and crawling insects.

A 5-litre container provides enough insecticide to treat an area of approx 100m2.

Directions for use
Administer spray to affected areas, paying particular attention to the edges of the room, around pipes and drains, and any other cracks and crevices which may be harbouring cockroaches. 

Also inspect inside kitchen units, under sinks, behind appliances and between tiles/floorboards etc and treat as necessary.

Do not apply spray to food preparation surfaces.

Avoid cleaning the treated areas for as long as possible as this will remove the protective residue.

When carrying out a cockroach treatment to a large area, we recommend using one of our Pressure Sprayers to enable an even distribution of the Formula 'C' insecticide and help you achieve a professional application (see Related Products below).

For a more comprehensive treatment, fumigat
ion devices such as Formula 'P' Foggers or Smoke Bombs should be added along with Pest Expert Formula 'P' Powder for use where spray is not suitable (e.g. around power points, behind electrical appliances/equipment).

Cockroach traps are also recommended as they help trap and kill cockroaches and are also a good way of identifying the location of harbourages, establishing the size of an infestation and helping monitor activity following treatment.

For the best value for money please see
our Cockroach Killer Kits, which contain a combination of our best products, including Pest Expert Formula 'C' Cockroach Spray, Formula 'P' Cockroach Powder and Cockroach Traps.

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Customer Reviews

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Reviewer: Elaine from Nettleham   5 Stars

Happy with my purchase, only had a small problem but thought I'd opt for the larger container! Worked extremely well and I have plenty of product left if they ever return!

Reviewer: Stuart from Elsham   5 Stars

Not problems with Pest Expert! Regularly use their rat poison but had a slightly different problem this time! So I opted for Formula C and just like their rat poison, it works!

Reviewer: Holly from Walsall   5 Stars

Fantastic value for money! Fast delivery and most importantly the product worked really well!

Reviewer: Michael from Kirby   5 Stars

Easy to use and very effective! Used across the whole house and have not seen a cockroach since! Fingers crossed that's the last of them!

Reviewer: Iqbal from Romford   5 Stars

Highly effective spray! Used in a commercial kitchen and really did the trick!