Why Tucson homes get scorpions
The Arizona bark scorpion is the only medically significant scorpion in the United States, and the Sonoran Desert is its home range. It climbs, it squeezes through gaps as narrow as 1/16 of an inch, and it hunts at night for crickets, roaches, and small spiders.
That last point matters more than most homeowners realize: a scorpion problem is usually a food-supply problem. Homes with heavy insect pressure around the foundation attract scorpions to the same perimeter.
Seal the entry points that actually matter
Start at the weep screed, the gap where stucco meets the foundation. Then door sweeps, garage door corner seals, utility and irrigation penetrations, window weep holes, and the gap under exterior door thresholds.
Copper mesh or stainless wool packed into penetrations, followed by a paintable sealant, holds up better in desert heat than expanding foam alone.
Reduce harborage in the yard
Scorpions shelter under anything flat and cool: loose block, stacked pavers, firewood, rock piles, and dense ground cover against the wall line. Pull that material eighteen inches off the foundation and elevate it.
Switch exterior lighting to warm LED or sodium-toned fixtures. White and blue-spectrum light draws far more insects, and insects draw scorpions.
When to bring in a professional
If you are seeing scorpions inside, blacklight inspection at night is the fastest way to map where they are entering and where they are congregating. Professional treatment combines a residual perimeter barrier with dusting of wall voids and attic entries.
Agave Pest Control runs blacklight inspections across Tucson, Oro Valley, and the Catalina Foothills as part of our scorpion program.