Last updated: 16/10/2022

How we pick our products

29Products analysed

59Hours spent

28Evaluated articles

185User reviews

An insecticide is a chemical that kills insects. Insecticides are used to kill or control pests such as cockroaches, fleas and mosquitoes. They can be applied in many ways including sprays, dusts and baits.

Insecticide: Bestsellers and current offers in the UK

The best insecticide in the UK: Our selection

Systemic Insecticide for Flowering Plants

This contact and systemic insecticide is ideal for protecting your flowering plants from a wide range of pests. It kills all major ornamental insect pests including whitefly, greenfly, blackfly and other aphids, scale insects, mealy bugs, red spider mites, caterpillars and lily beetles. It also offers a useful level of control of thrips. Its systemic action protects treated plants from such pests for up to three weeks. It can be used outdoors and in greenhouses and conservatories on ornamentals, fruit and vegetables.

Crawling Insect Protection

Looking for a product that will offer you long lasting protection from crawling insects within your home? Look no further than this great product. It contains permethrin and d-allethrin, which work together to kill fleas, ants, cockroaches, earwigs, bedbugs and most other crawling insects within the home. This product is intended for indoor use only.

, backpack sprayer, or hose-end sprayer

Looking for an insect killer that is fast acting and odorless? Look no further than monterey insect killer. This bacterial product is produced by fermentation and rapidly treats plants without producing odors. It controls many insects, including caterpillars, leafminers, codling moth, tent caterpillars, gypsy moth, trips, borers, fire ants, and more. It can be used on outdoor ornamentals, lawns, vegetables, and also broadleaf weeds. This csi alternative product may be applied with a trigger sprayer

units, and food preparation areas

If you’re looking for a carpet treatment spray that will control larvae and adult moths, look no further than our mixed-formulation ready-to-use spray. Our professional strength insecticide controls a wide range of textile moths and beetles, including the case-bearing clothes moth, commonly known as the carpet moth. Moth & beetle control can be challenging due to established eco-systems beneath carpet layers, but our spray can help stop problems emerging by being applied directly to the damaged and surrounding area. For established infestations, we recommend using this product together with an insecticide powder application beneath the carpet surface. Unlike standard surface sprays, we include a multi-ingredient insect control approach which is vital for long-term management. The igr works by breaking the life cycle to disrupt an insect’s regular growth pattern so that juveniles exposed will be sterile as adults – thus stopping the constant cycle of reproduction used by professionals. Our carpet insect killer spray is approved for both professional and amateur users and is widely used within the pest industry as the first control method for moth and beetle infestations. The product can be used in a wide range of scenarios, including domestic situations and public hygiene areas such as offices, industrial

Insecticide: Frequently asked questions

What types of Insecticide are there and what determines a good product?

There are two types of insecticides, contact and systemic. Contact Insecticides kill insects that come in direct contact with the spray or powder. Systemic Insecticide is absorbed by the plant from its roots to leaves and kills any pest that comes into contact with it.

A good insecticide should be able to kill the target pest, but not harm humans or other animals. It must also have a long shelf life and be easy to apply.

Who should use a Insecticide?

Anyone who has a problem with insects. Insecticides are used to control cockroaches, ants, fleas and other household pests.

Based on what criteria should you buy a Insecticide?

The most important factor is safety. You also need to consider the effectiveness of the product, whether it can be used indoors and outdoors, how long a bottle lasts on average, and if you like the smell. Based on these criteria we rated each insecticide with scores from 0-10 (see table).

The quality of the product. You can often find out a lot about the quality of a product by looking at its price. If you want to get value for your money, choose an item that delivers as promised.

Price and availability are also important factors to consider when comparing Insecticides. It is not uncommon for expensive products to be cheaper than cheap ones or offer better deals in general such as free shipping or extra bonuses.

What are the advantages and disadvantages of a Insecticide?


Insecticides are used to kill insects. They can be applied in the garden, around buildings and on plants or trees. Some insecticides will only affect certain types of pests while others may have a wider range of activity against different species. There is also an organic option which uses natural ingredients such as chrysanthemum flowers (pyrethrum) to control aphids, whitefly and other soft-bodied insects that suck plant juices from leaves and stems but not caterpillars etc..


Insecticides are not selective. They kill all insects, including the beneficial ones like bees and butterflies. Some insecticides can be harmful to humans if they come in contact with them or ingest them through food that has been sprayed with it (i.e., vegetables).

Shopping Guide: Everything you need to know

Which brands and manufacturers are represented in our review?

In our review, we present products from various manufacturers and suppliers. The list includes products from the following brands and manufacturers, among others:

  • Scotts Miracle-Gro
  • Protector C

What is the price range of the featured products?

The cheapest Insecticide in our review costs around 4 pounds and is ideal for customers who are conscious about their money. However, those who are willing to spend more money for better quality can also spend around 37 pounds for one of the more expensive products.