Why Scorpion Prevention Starts Outside
Most scorpion encounters inside a home trace back to an entry point or harborage area outside — a gap around a weep hole, a rock pile touching the foundation, or a tree branch that gives a scorpion a path onto the roofline. Prevention is largely about removing those opportunities before scorpions find them.
Reduce Harborage Around the Home
Arizona bark scorpions look for shaded, undisturbed places to hide during the day. Rock landscaping, loose bark mulch, woodpiles, and dense ground cover directly against the house all provide exactly that.
- Keep landscaping rock and mulch a few inches back from the foundation where possible
- Store firewood and building materials away from exterior walls, ideally elevated off the ground
- Trim shrubs and tree branches so they don't touch the roofline or walls
- Clear clutter from garages and storage areas, which scorpions use as daytime hiding spots
Seal Likely Entry Points
Scorpions can fit through surprisingly small gaps. Weep holes (the small openings along the base of brick or block exteriors), expansion joints, and gaps around plumbing or utility lines are common entry routes. Vent-compatible weep hole covers and sealing visible gaps can meaningfully reduce entry opportunities.
Watch for Seasonal Increases
Scorpion activity tends to increase during warmer months and after monsoon rain, when scorpions move in search of food and moisture. If you notice more activity during these periods, it's a good time to double check door sweeps, screens, and any gaps that may have opened up.
When Prevention Isn't Enough
If scorpions are getting inside despite these steps — especially in bedrooms or bathrooms — a professional inspection can identify entry points that are difficult to spot without a trained eye, along with harborage areas around the property that may need direct treatment.
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