Get In Touch

Fill in your details below and click 'Submit'

Customer Login


Total: £0.00

View Cart

Free Next Day Delivery

For orders over £50 placed before 4.00pm

Pest Expert Formula 'P+' Ultimate Cockroach Killer Spray Insecticide Concentrate (Makes 10 Litres)

£29.95 incl. VAT
£24.96 excl. VAT

Select Quantity

Qty From Qty To Unit Price
1 £29.95
2 5 £27.95
6 £24.95


Pest Expert Formula ‘P+’ Ultimate Cockroach Killer is our latest maximum-strength, specialised insecticide concentrate. The only product on the UK market to contain this unique combination of active ingredients, makes it unrivalled in its ability to rapidly control all levels of cockroach infestations, from minor to severe.

  • Powerful Professional Grade Formulation, only recently approved for amateur use 
  • Unique advanced triple active concentrate - Exclusive to Pest Expert
  • Unrivalled fast-acting knockdown and long-lasting residual
  • Ideal for an intensive treatment, or controlling large cockroach infestations
  • For the control of cockroaches, makes up to 10L, 7.5L on porous surfaces

Product Information

Pest Expert Formula ‘P+’ Advanced Insect Killer is a maximum-strength insecticide concentrate ideal for controlling cockroach infestations.

The unique professional grade formulation has only recently been approved for amateur use. Containing three powerful active  ingredients: Tetramethrin (0.9%), Permethrin (6%) and  PBO it provides both a rapid knockdown and long-lasting residual. This exclusive combination of actives cannot be found anywhere else and makes Formula 'P+' the strongest cockroach-killing insecticide available on the amateur market. A 100ml concentrate bottle will dilute to treat 100 square metres.

Formula ‘P+’ attacks the cockroaches nervous system, working quickly upon contact and/or when ingested to eradicate even large cockroach infestations.

A 100ml bottle will dilute to treat 100 square metres.

Directions for use

Shake the bottle before use. Dilute the product as instructed below and use immediately. Spray on insect-infested areas, applying to cracks and crevices, wall-floor junctions and in all places where cockroaches may be harbouring. After use, avoid treated surfaces.

Flying insects: Dilute 25ml of the product in 5L of water.

Crawling insects: Dilute 50ml of the product in 5L of water for use on non-porous surfaces (wood, glass, ceramics), and 75ml of the product in 5L of water for use on porous surfaces (carpets, concrete).


Formula ‘P+’ is best administered with a 5L Pressure Sprayer for a more thorough and even coverage (see related products below).

For a comprehensive treatment, use alongside Formula ‘IC' Cockroach Killer Gel and Formula ‘P’ Super Fumers.


Most popular products

Customer Reviews

Write an online review and share your thoughts with other shoppers!

Reviewer: Gillian from Market Harbourough   5 Stars

Impressive product! The product was easy-to-apply and quickly killed the cockroach life-cycle. Would not hesitate to recommend!

Reviewer: Alfie from Brighton   5 Stars

This product was amazing. The cockroaches were all dead within 48 hours and they have not been seen since - very impressed!

Reviewer: Harry from Oxford   5 Stars

Nothing but praise for this product and Pest Expert in general! Their products and service is second to none and I will continue to use them for our pest control needs.

Reviewer: James from Manchester   5 Stars

By far the best spray I've used for cockroaches - it actually works! This one purchase was enough to treat my whole house and was far cheaper than a professional pest controller!

Reviewer: Geraldine from Louth   5 Stars

This product was utterly amazing! It quickly eradicated our cockroach infestation and we were so impressed!