Woodlice

Problem

Woodlouse Woodlice or slaters are members of the Crustacea family which also includes crabs, lobsters and shrimps.

There are about 35 species of woodlice in Britain and some of these are of horticultural or agricultural significance, because they eat and damage plants. Some woodlice come indoors, especially during the cooler autumn and winter weather, and of these the most common is the Garden Woodlouse.

Woodlice have to live in damp places to survive. When large numbers of woodlice are seen indoors it may mean that there is a problem with high levels of moisture in the room due to condensation or dampness. In most cases, however, woodlice simply enter houses to seek protection from cold weather, perhaps encouraged by the build up of vegetation outside a house.

Although unsightly, woodlice are harmless.

Life Cycle

After mating the female woodlouse commences to produce a variable number of eggs usually up to about 150. These are contained within her body, in a brood pouch, until the young have hatched when they are then released into the environment. The young woodlouse is white and 2mm long. The woodlouse grows through moulting its skin and when fully grown may be 15 mm in length. It also has seven pairs of legs. In Britain it is common for most of the species of woodlice to produce only one generation of offspring per year.

Control

Woodlouse Woodlice are harmless. They are best swept up and returned to their normal outside environment. Alternatively a vacuum cleaner should be used to remove them. The best form of control is to stop them getting into the property by repairing holes, gaps or cracks in walls, floors and door frames. Occasionally the weather bar at the base of the door frame should be replaced. The presence of woodlice may be a sign of condensation or some other form of dampness. By resolving this problem the woodlice will eventually disappear. Also to help prevent further entry from the adjacent garden, rubbish and other potential refuges of woodlice should be removed. As a last resort an insecticidal barrier of a residual dust or spray may also help to discourage the presence of woodlice.

Treatment

The treatment is carried out using an approved insecticide. Further information on the insecticide is available on request.

The use of insecticide is carefully controlled by the Control of Pesticide Regulations 1986.

The Pest Control Officer is fully trained and all necessary measures are taken to comply with the Health and Safety at Work etc. Act 1974 and Regulations thereunder.

Instructions will be given at the time of application in relation to safety of the householder and pets.

In some cases more that one application is necessary to ensure control.

A CHARGE MAY BE MADE FOR YOUR PEST CONTROL TREATMENT

NB: The information on these page is primarily for the residents of Clackmannanshire. For enquiries out with Clackmannanshire Council's area you are recommended to contact your local Environmental Health Department or a private pest control contractor.