Occasional Invaders
Sowbug & Pillbug
Small, grey, armoured creatures (actually crustaceans) that need moisture to survive. They wander indoors from damp soil and mulch along the foundation.
Quick facts
- Size
- 6–15 mm
- Colour
- Grey to slate
- Active season
- Spring to fall
- Where found
- Mulch, under stones and boards, damp basements
How to Identify
- Oval, segmented body like a mini armadillo
- Seven pairs of legs
- Pillbugs roll into a ball; sowbugs can’t
Signs to Look For
- Bugs on basement floors or near doors
- Clusters under pots, boards and mulch
- Dead bugs indoors where it’s dry
Why It Matters
- Harmless to people and buildings
- Can nibble seedlings in gardens
- Point to excess moisture near the home
Prevention Tips
- Keep mulch and debris away from the foundation
- Improve grading and drainage
- Seal gaps along doors and basement windows
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Millipede
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