Slaters, also known as Sowbugs, Wood Lice and Pillbugs are in fact, not insects, but crustaceans, more closely related to prawns crabs and lobsters .
They are one of only two species of crustaceans that have adapted to living solely on land, although they still need to live in a fairly moist exterior environment
Although they will, from time to time enter buildings, their presence is purely nuisance value, as they do not bite, sting, or known to transmit diseases, nor do they infest food, clothing or wood.
Slaters range in size from 6mm to 12mm long and are usually dark to slate grey. They have oval, multi-segmented bodies, are convex above but flat or concave underneath. They possess seven pairs of legs and two pairs of antennae although only one pair of antennae is readily visible. Slaters have two tail-like appendages which project out from the rear end of the body.