Woodlice

Latin name: Oniscus asellus
To a certain extent, woodlice in your house are an indication of a possible problem with something else. These crusty looking creatures are in fact crustaceans, like crabs and lobsters, and need moisture.
So they only live where it is damp. If you find them regularly in your house, it could mean that you have a damp problem. If the area where you are finding them is dried out, they will probably disappear