The Sow Bug is a small humble little guy. They are common in gardens though tend to stay out of sight. Sow Bugs seem skilled at getting into your house as well. This is especially true if you have an older home or one without a finished concrete basement. In Newfoundland they are commonly called wood lice, carpenters and even boat builders.
Sow Bugs can be found gathered at near rotting wood so are considered pests by some. However most of the time they are content to remain in their natural environment where they feed on rotting plants. In many damp outdoor spaces they will be present under rocks and other objects. When they show up in your house it tends to be a solitary mission and they are very lost. Just a convenient oasis when the outside weather turns cold.