Woodlice are one of the few land crustaceans. They have oval, grey, segmented bodies 10-15mm long, with 14 legs and prominent antennae. Common names include ‘slaters’, ‘sow-bugs’ and ‘pill-bugs’.
There are three species that enter houses from the garden – one of which, the pill woodlouse, rolls up into a tight ball when disturbed.
Woodlice are harmless feeders upon rotten wood or other vegetable matter in cool, damp areas. They typically live underneath stones, clumps of plants, logs, or doormats, from which they may crawl into dark corners of a house.