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Woodlice are land crustaceans also called sowbugs, pillbugs, or potato bugs. Woodlice are small crustaceans with oval bodies when viewed from above. Their back consists of a number of overlapping, articulating plates. They have 7 pairs of legs, and antennae which reach about half the body length. Most are slate gray in color, and may reach about 15 mm long and 8 mm wide.

The presence of Woodlice or pill bugs in the living quarters of a home is an indication of high moisture conditions. This condition will also contribute to a number of other problems including mildew, wood rot and a good breeding environment for other insects. With increased population of these bugs, treatment can be provided and other recommendations will be suggested to help reduce recurrence.