Scorpions in Arizona: What Every Homeowner Should Know
Arizona has more scorpion species than any other state. Learn to identify them and protect your home.
Arizona Scorpion Species
Phoenix Valley homeowners encounter a handful of species most often. Identifying which one determines risk level and treatment.
Arizona Bark Scorpion
Centruroides sculpturatus
Appearance: Light tan to yellowish-brown, 2-3 inches long, slender body with thin pincers and a curved tail
Where found: Inside homes (walls, closets, shoes, bedding), under rocks, in block wall fences, near irrigation
Danger level: High
Striped Tail Scorpion
Vaejovis spinigerus
Appearance: Tan with dark striping on the back and tail, 2-3 inches, stockier than bark scorpion
Where found: Under rocks, landscape debris, in garages
Danger level: Low to moderate
Giant Hairy Scorpion
Hadrurus arizonensis
Appearance: Largest Arizona scorpion (4-6 inches), dark body with yellowish legs and pincers, visible "hair" on legs
Where found: Desert edges, undeveloped lots, yards bordering open desert
Danger level: Low
Why Arizona Has Such Intense Scorpion Pressure
The Sonoran Desert offers scorpions warmth, abundant prey, and rocky shelter. The Phoenix metro is built on former desert -- and the scorpions stayed.
March-May
Activity increases as scorpions emerge from winter harborage.
June-September (peak)
Highest activity. Monsoon moisture drives scorpions indoors seeking dry shelter.
October-November
Activity declines but scorpions seek warm shelter in wall voids, attics, and garages.
December-February
Reduced activity but scorpions don't hibernate -- they cluster in warm harborage areas.
Scorpions enter through door gaps, plumbing penetrations, weep holes, and expansion joints. Bark scorpions fit through any gap wider than 1/16 inch.
How Dangerous Are Scorpion Stings?
Most non-bark scorpion stings cause localized pain similar to a bee sting -- uncomfortable but not dangerous for healthy adults.
Bark scorpion stings can cause intense pain, numbness, muscle twitching, and in severe cases, difficulty breathing -- particularly dangerous for children.
Scorpion Prevention Tips for Arizona Homeowners
These steps reduce scorpion activity around your home. They complement -- but don't replace -- professional treatment.
- Eliminate harborage: Remove debris, rock piles, and woodpiles from around the foundation.
- Control moisture: Fix leaky faucets and irrigation -- moisture attracts the prey insects scorpions feed on.
- Seal entry points: Caulk gaps around doors, windows, and plumbing. Install door sweeps on all exterior doors.
- Reduce outdoor lighting: Use yellow "bug lights" to avoid attracting insects that draw scorpions.
- Clear vegetation: Trim trees and shrubs away from the structure so scorpions can't use them as bridges.
- Check shoes and clothing: Shake out items stored in garages or closets, especially during peak season.
When to Call for Professional Scorpion Control
- You're finding scorpions inside your home (not just outside)
- You're seeing scorpions regularly (more than one per month)
- You have children or vulnerable family members in the home
- You've tried DIY products without results
- You want permanent prevention through structural exclusion
- You're buying or moving into a home in a scorpion-prone area
Scorpion Questions
Related Services
Professional treatment options for this pest