Scorpions in the Phoenix Metro Area
Scorpions in the Valley: What Every Phoenix Homeowner Needs to Know (And a Lesson I Learned the Hard Way)
If you've lived in the Phoenix area for any length of time, you already know that scorpions come with the territory. They're a reality of desert living — and one that nearly every homeowner in the Valley will face at some point. I know because I've lived it firsthand, and my kids paid the price along with me.
The wood chip incident I'll never forget
Many summers ago, I decided to spruce up the landscaping along the back of our house. I spread a fresh layer of wood chips around the base of some bushes — the kind of thing you do on a Saturday morning without thinking twice. It looked great. Clean, tidy, finished.
What I didn't realize was that I had just rolled out the welcome mat for bark scorpions.
Within a few days, my sons and I each got stung. Not once between us — multiple stings. The burning, the tingling, the numbness that creeps up your arm or your foot and makes you wonder how serious it's going to get. My sons were tough about it, but it shook me. I should have known better, and after that experience, I made it my mission to understand exactly what draws scorpions in and what actually keeps them out.
"Wood chips, bark mulch, and organic ground cover create exactly the warm, moist, sheltered environment that scorpions — especially bark scorpions — are looking for. I learned that lesson the hard way so you don't have to."
Since then, I've talked to pest control professionals, done my research, and put real practices in place at our home. As someone who helps families buy and sell homes across the Phoenix metro every day, I feel a responsibility to share what I've learned. Here's what actually works.
Why the Phoenix area has a scorpion problem
The greater Phoenix metro — including Gilbert, Chandler, Scottsdale, Tempe, Mesa, Peoria, and surrounding communities — sits squarely in bark scorpion territory. The bark scorpion is the most venomous scorpion in North America, and it is exceptionally good at finding its way into homes. It can squeeze through a gap as thin as a credit card, climb stucco walls, and hide in the tightest corners of your garage, closet, or attic.
New construction and expanding neighborhoods have pushed further into the natural desert habitat, which means scorpions aren't just wandering in from the wild — in many areas, we've built right on top of where they already lived.
Bark scorpion stings can be medically serious — especially for young children, the elderly, and pets. If stung, contact Poison Control (1-800-222-1222) immediately or go to an ER if symptoms are severe.
What actually attracts scorpions to your yard and home
Scorpions are drawn to three things: shelter, moisture, and food. Eliminate or reduce those, and you make your property significantly less attractive to them. Common attractants include wood chips and bark mulch near the foundation, stacked firewood or pavers, over-irrigated landscaping, crickets (their primary food source), gaps and cracks in your home's exterior, and cluttered garages or storage areas where they can hide undisturbed.
What you can do about it
The good news is that scorpion activity is manageable. It takes consistency, but the steps are straightforward — and several of them you can do yourself this weekend.
Replace wood chips and bark mulch with gravel or decomposed granite near the house
Seal every gap — doors, windows, pipes, A/C lines, and weep holes with mesh
Apply diatomaceous earth along baseboards, entry points, and perimeter walls
Hire a pest control company with a scorpion-specific treatment program
Treat for crickets — they are a scorpion's primary food source in the Valley
Keep firewood, lumber, and stored items away from exterior walls
Switch porch lights near entry points to yellow bulbs to reduce cricket attraction
Walk your yard at night with a UV black light — scorpions glow bright green
Replace organic mulch with rock
This was my biggest takeaway after our sting incidents. Wood chips and bark mulch trap moisture, stay cool during the day, and offer perfect hiding spots. Switching to decomposed granite, pea gravel, or river rock near your home's perimeter removes one of the biggest attractants. It's a landscaping change that pays for itself in peace of mind.
Diatomaceous earth: the low-cost, chemical-free secret weapon
If you haven't heard of diatomaceous earth (DE), it's worth knowing. This is one of the most effective and underused tools in a Phoenix homeowner's pest control arsenal — and it's completely natural, non-toxic to humans and pets, and inexpensive.
Diatomaceous earth is a fine powder made from the fossilized remains of tiny aquatic organisms called diatoms. It looks and feels like talc, but under a microscope, it's razor-sharp. When a scorpion walks through it, the microscopic particles pierce the scorpion's exoskeleton and absorb the oils and moisture from its body, causing it to dehydrate and die. It works the same way on crickets, roaches, and other insects — making it a dual-purpose tool that attacks both scorpions and their food supply.
Always use food-grade diatomaceous earth, not pool-grade. Pool-grade DE has been heat-treated and is harmful if inhaled. Food-grade DE is safe around children and pets once settled, but wear a dust mask when applying — the fine powder can irritate lungs.
Here's how to use it effectively around your home:
Apply a thin, even layer along the inside of baseboards, under appliances, inside cabinet toe-kicks, around water heater and A/C unit bases, and along any interior wall where scorpions have been seen. Outside, dust it along the base of block walls, around the home's perimeter, and in the gaps between pavers or rock beds. The key word is thin — a visible dusting is all you need. Piling it thick actually reduces its effectiveness and makes it easier for pests to avoid.
The one important limitation: diatomaceous earth loses its effectiveness when wet. In Phoenix's summer monsoon season, you'll need to reapply outdoor applications after heavy rain. For indoor use, it stays effective indefinitely as long as it stays dry.
You can find food-grade diatomaceous earth at most home improvement stores, feed stores, and online for just a few dollars a pound. It's one of the best return-on-investment pest control steps a Phoenix homeowner can take.
Seal your home seriously
Most homeowners underestimate how many entry points a home has. Walk around and look at every spot where something passes through your wall — pipes, cables, A/C lines. Check your weatherstripping on every door. Fill weep holes in block walls with fine steel mesh. Door sweeps on garage doors are one of the most underrated investments a Phoenix homeowner can make.
Get on a dedicated scorpion treatment program
Not all pest control is equal. Standard bug spray does very little against scorpions. Look for companies that specifically advertise scorpion treatment and use products designed to penetrate the areas where scorpions harbor. Monthly or bi-monthly treatments during peak season — spring through fall — make a real difference when combined with the other steps here.
Eliminate their food supply
Fewer crickets means fewer scorpions. Crickets are attracted to outdoor lighting, so switching to yellow or sodium vapor bulbs near entry points helps. Diatomaceous earth applied along the perimeter also knocks down cricket populations significantly, which is one of the reasons it's such a powerful double-duty tool in the Valley.
Hunt at night with a UV light
Scorpions fluoresce bright green under ultraviolet light. A simple black light flashlight — inexpensive, available at any hardware store — lets you walk your yard and walls at night and spot scorpions you'd never see otherwise. It gives you a real picture of what you're dealing with, and it's oddly satisfying to get ahead of the problem before it comes inside.
A word to buyers and sellers
If you're buying a home in the Phoenix area, ask about the scorpion history of the property. A good Realtor — and a good home inspector — will flag signs of scorpion activity and help you understand what kind of ongoing mitigation the home has or needs. If you're selling, proactive treatment and a sealed, well-maintained perimeter can genuinely improve a buyer's confidence in your home.
This is one of those topics that doesn't always come up in the home buying conversation — but it should. Desert living is wonderful. But it comes with some responsibilities that a little knowledge, a bag of diatomaceous earth, and consistency can handle.
My sons still joke about the wood chip summer. Hopefully your family never has to joke about anything similar.
Questions about Phoenix area homeownership?
Whether you're buying, selling, or just want to understand what makes a home truly livable in the Valley, I'm here to help. Real estate advice and honest conversations — that's what I'm about.
David Thomas | Phoenix Area Realtor
Serving Gilbert · Chandler · Scottsdale · Mesa · Tempe · Peoria and surrounding communities
Recent Posts










Making real estate fun, simple and stress-free!
