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How to Get Rid of Woodlice

Cartoon Woodlice
25 Jul


Woodlice belong to the class of arthropods known as crustaceans, which is a predominantly aquatic group containing the crabs and lobsters. Although they now live on land the woodlice have not completely shaken off their aquatic habits. Their skins are not completely waterproof, and the animals very soon desiccate in a dry environment. This is why almost all of them are confined to damp places and why they only come out to feed at night, when the air is cooler and damper. Many of the species can breathe only if their bodies are covered with a thin film of moisture, although they would soon drown if immersed in water.


Woodlice on log


Woodlice are treated harshly by gardener and housewife alike and as soon as they appear they are squashed underfoot. In fact, in many areas it is considered to be unlucky to have a woodlouse in the house. They are in fact harmless creatures however, and certainly don’t deserve to be slaughtered whenever they are found. They may occasionally nibble young seedlings, but they are generally more interested in dead leaves and decaying material and their presence in the garden is probably more beneficial than harmful.

Those species that can roll up into a ball were once thought to have a medicinal value and were swallowed whole, alive, in attempts to cure digestive problems. They were also given to cattle and this is probably why they are called cud-worms in some areas.


It is important to remember that woodlice are not harmful in any way. Certain species will nibble house plants, but they pose no threat to humans. They may wander indoors to protect themselves from inclement weather or if there is a build up of vegetation around the home. Woodlice love rotting wood if you keep a wood store next to the house this will increase the likelihood of them entering your home.

The best way to deal with them is to vacuum them up and spray a residual spray such as Dethlac around entry points to deter them. Blocking any obvious points of entry with a sealant such as decorators caulk is also advisable. Bear in mind though that a cluster of woodlice in one spot may be an indication of a damp problem that should be investigated.


Product 1:  Woodlice Control Kit

Woodlice kit showing products

Woodlice Control Kit

The woodlice control kit is an all in one solution to any woodlice problem and will help you get rid of woodlice effectively in your home. The kit contains three elements , a spray, powder and fumer. The Rentokil Insectrol spray is ideal as a knock-down spray and can be sprayed onto the woodlice infestation for an immediate kill or onto a hard surface where woodlice can harbour in cracks and crevices to achieve a longer lasting effect. The Organ X powder (diatomaceous earth) is more suitable for areas where liquid would not be appropriate as it can be applied in a fine layer to carperts, cracks and crevices. We also include a Pest Pistol Duster in the kit as this allows the Organ X powder to be applied with ease into cracks, crevices and voids, all places that woodlice like to gather. The final product within the kit is the Forte Fog P Midi Fumer.  Smoke Bombs are ideal for infestations in lofts, old chimneys or under floors.



Woodlice Killer Spray

Dethlac Insecticidal Lacquer

Product 2: Dethlac Insecticidal Lacquer

Dethlac Insecticidal Lacquer is one of the best woodlice killers on the market and has existed as a trusted household pest essential for over 50 years. The reason Dethlac is so effective against woodlice infestations is because it dries to a hard clear film which remains active for months even in rainy conditions. The spray works best when it acts as a barrier as it dries leaving a toxic line and any woodlice who attempt to cross this line are killed instantly. Dethlac can be used both indoors and outdoors which makes it the ideal solution to get rid of woodlice.


Woodlice killer powder

Organ X Killing Powder

Product 3: Organ X Killing Powder 

Organ X Killing Powder or diatomaceous earth is a naturally mined mineral product made up of fossilized remains of diatoms. When crushed to a fine powder it feels similar to chalk powder. When viewed under a microscope it resembles shards of broken glass. Controls Woodlice by abrasion. It is non-toxic and kills all crawling insects. Chemical free.




Product 4: Polminor Dust Bellows

Woodlice dust applicatorThe Polminor Insect Powder Dusting Bellow can hold up to 2 litres of powder of dust which makes it ideal for distributing products such as organic dusts or natural insecticides both which are very effective to get rid of woodlice. The large capacity of this dust bellow makes it an essential woodlice infestation solution tool. It also has an adjustable outlet pipe to reach cracks and crevices where woodlice may be hiding.





Each product which has been mentioned by our experts are most effective when used properly and in the right circumstances. We offer many solutions and products to get rid of woodlice, all of which can be viewed here. If you have any questions on how to get rid of woodlice please feel free to get in touch with one of our experts either by our contact page or by calling 01332 340898 they will be happy to assist you.

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