Are bark scorpions dangerous in Arizona?
Short answer
Yes. The Arizona bark scorpion is the most venomous scorpion in North America, and its sting causes intense pain, tingling and numbness that can last many hours. Most healthy adults recover at home, but stings to young children, older adults, or people with severe reactions can be medically serious. Call Poison Control at 1-800-222-1222 after any sting for guidance.
Arizona context
Bark scorpions are native to the Sonoran and Chihuahuan desert country that covers most of Hydra's service area, and they are the species behind the majority of scorpion calls from the Gila Valley and Cochise County. Unlike the bulkier desert hairy scorpion, bark scorpions climb, so they turn up on walls, ceilings, inside light fixtures, and in shoes and bedding rather than staying on the ground.
What to look for
- Slender tan or light-brown body, roughly 2–3 inches long, with thin pincers and a curved segmented tail
- Glows bluish-green under a UV blacklight at night
- Found climbing vertical surfaces or hanging upside down from ceilings, which most other Arizona scorpions do not do
- Repeat sightings in the same room usually mean harborage nearby, not a one-off wanderer
When professional service is warranted
Any sting to a child, an older adult, a pregnant person, or anyone with breathing difficulty, uncontrollable muscle jerking, or trouble swallowing is a medical emergency — seek care immediately rather than waiting it out. On the structural side, repeat indoor sightings mean the property has ongoing harborage and entry points, which is not something retail sprays resolve.
How Hydra handles it
Hydra treats scorpions with a combined interior and exterior program: residual perimeter treatment, dust applications into wall voids and weep holes, granular treatment around the foundation, and nighttime UV blacklight inspections to find where scorpions are actually living. Because bark scorpions feed on other insects, suppressing the food supply matters as much as treating the scorpions themselves, so recurring service is part of the plan.
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Reviewed by the Hydra Pest Control service team · Updated