Woodlouse (Pill Bug)
Woodlice are terrestrial crustaceans that need moisture to survive. Their presence indoors indicates a moisture or water infiltration problem.
Identification sheet
Health risks
Woodlice are completely harmless to humans. They don't bite and don't transmit diseases. However, their presence signals a moisture problem that can promote mold growth.
Signs of infestation
- Woodlice visible in basement or bathroom
- Present under flower pots and stones outside
- Accumulation near drains and pipes
- Signs of excessive moisture (condensation, mold)
- Dead woodlice on basement floor
- Rotten or moisture-damaged wood
Prevention tips
- Reduce humidity in basement and bathroom
- Fix water infiltrations
- Ensure proper ventilation
- Move dead wood and debris away from foundation
- Improve drainage around the house
- Seal cracks in foundations
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