Signs of scorpions in San Diego County
Scorpions are nocturnal and secretive, so most sightings happen by accident, at night, or when moving something that has sat undisturbed. A UV flashlight is the most reliable way to confirm activity.
How to tell if you have scorpions
- Scorpions glowing under UV light at nightA quick sweep of the yard, patio, and garage floor with a UV flashlight after dark is the clearest way to see how active a property really is.
- Scorpions found in shoes or stored itemsFinding one in a shoe, glove, or towel left outside points to a population close enough to the house to be using it for cover.
- Activity near rock walls or wood pilesScorpions favor cool, dark hiding spots, so rock landscaping, retaining walls, and stacked firewood are the first places to check.
- Sightings after moving outdoor itemsLifting a planter, board, or stack of bricks that has sat in place for a while often reveals a scorpion underneath.
- Increased activity after warm eveningsScorpions come out to hunt more actively on warm nights, so a jump in sightings during a heat spell is a normal seasonal pattern, not a new infestation.
What to do next
Keep firewood and rock piles off the ground and away from the foundation, seal gaps around utility penetrations, and do a UV flashlight check each spring before scorpions become more active for the season.
Ready to act? How to get rid of scorpions.
Signs of scorpions in your city
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Common questions
Are the scorpions in San Diego County dangerous?
San Diego's common scorpion species delivers a painful sting similar to a bee, but it is not considered medically dangerous for most healthy adults. Watch children and pets more closely, and seek medical care for a severe reaction.
Why do I see more scorpions after it rains?
A rare heavy rain can flood the burrows and cracks scorpions normally hide in, pushing them toward drier, elevated ground, including a house foundation.
Do scorpions in San Diego actually glow under black light?
Yes. Their exoskeleton fluoresces bright blue-green under UV light, which is why a nighttime flashlight check is the fastest way to see how many are on a property.
Spotting signs of scorpions?
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