Tempe, Arizona is a great place to live—warm weather, vibrant neighborhoods, and plenty of sunshine. But that same desert climate also makes it prime territory for spiders. From harmless house spiders tucking themselves into corners to more concerning species like black widows and brown recluses, spiders are a year-round reality for most Tempe residents.
The good news? You don’t have to share your home with them. With the right prevention habits and control strategies, you can significantly reduce spider activity inside and outside your home. This guide breaks down exactly how to do that—without the guesswork.
Why Tempe Homes Attract Spiders
Before tackling the problem, it helps to understand why spiders show up in the first place.
Spiders don’t come into your home looking for food scraps or water the way ants or cockroaches do. They follow their prey. If your home has a steady supply of insects—mosquitoes, flies, gnats, moths—spiders will move in to hunt them. Tempe’s warm, dry climate keeps insect activity high for most of the year, which means the spider buffet rarely closes.
Beyond food, spiders look for shelter. Cluttered garages, undisturbed storage boxes, woodpiles stacked against the house, and dense shrubs near the foundation all create ideal hiding spots. Add in gaps around windows, doors, and utility lines, and spiders have plenty of easy entry points.
Understanding this relationship—spiders follow insects, insects follow warmth and food—is the foundation of effective spider control.
Common Spiders Found in Tempe
Not all spiders pose the same level of concern. Here’s a quick rundown of what you’re likely to encounter:
Desert Brown Spider
Often confused with the brown recluse, the desert brown spider is native to Arizona. It prefers dark, undisturbed areas like closets, garage shelves, and storage boxes. Its bite can cause tissue damage in some cases, so it’s worth treating with caution.
Black Widow
Recognizable by the red hourglass marking on its abdomen, the black widow is one of the most venomous spiders in North America. They tend to hide in low, sheltered spots—under patio furniture, inside wood piles, and in corners of garages or sheds.
Wolf Spider
Large, fast-moving, and intimidating in appearance, wolf spiders are actually beneficial predators. They don’t spin webs and instead hunt actively on the ground. Their bite is rarely medically significant, but their size tends to alarm homeowners.
Common House Spider
The most frequently encountered spider in Tempe homes, house spiders build messy, tangled webs in corners and windows. They’re harmless and actually help reduce other insects in your home.
Knowing what you’re dealing with helps you decide whether to manage the situation yourself or call in professional help.
Prevention: Keeping Spiders Out Before They Get In
Prevention is always more effective than reactive treatment. These strategies address the root causes of spider activity.
Seal Entry Points
Walk around your home and look for gaps—around window frames, door sweeps, utility penetrations, and where pipes enter the wall. Even small cracks give spiders access. Use caulk for stationary gaps and weatherstripping for doors and windows. Pay extra attention to the garage, which is often the least-sealed entry point in a home.
Reduce Outdoor Lighting Near Entry Points
Lights attract insects, and insects attract spiders. Switching to yellow or sodium vapor bulbs for exterior lighting reduces the number of insects drawn to your home at night, which in turn makes your home less appealing to spiders. Moving light fixtures away from doors and windows can also help.
Eliminate Harborage Sites
Firewood stacked against the house, dense ground cover, rock piles, and cluttered storage areas all create shelter for spiders. Store firewood at least 20 feet from the house, trim vegetation away from the foundation, and keep storage areas organized and off the ground where possible.
Declutter Inside Your Home
Cardboard boxes, piles of laundry, and undisturbed areas in closets or the attic give spiders places to nest without being disturbed. Regular cleaning—especially in corners, behind furniture, and in storage spaces—removes both spiders and their egg sacs before populations grow.
Address the Underlying Insect Problem
If spiders are thriving inside your home, it’s often a sign of a broader insect problem. Fixing moisture issues, storing food properly, and sealing entry points for insects will reduce the food source that attracts spiders in the first place.
Control Strategies: Managing an Active Infestation
If prevention measures haven’t been enough, or if you’re dealing with an established spider population, these control strategies can help.
Remove Webs Regularly
Knocking down webs—especially outdoors and in garages—discourages spiders from settling in. Use a vacuum to capture both webs and the spiders that built them. Dispose of the vacuum bag or empty the canister outside immediately. This won’t eliminate spiders entirely, but consistent removal disrupts their activity and reduces egg sac survival.
Use Sticky Traps Strategically
Glue boards placed in corners, along baseboards, under furniture, and in garage areas are an effective, non-toxic way to monitor and reduce spider populations. They’re particularly useful for identifying which species are active in your home and tracking whether a treatment is working.
Apply Residual Insecticide Around the Perimeter
A residual spray applied around the base of your foundation, along window sills, and around door frames creates a barrier that can kill spiders and insects on contact. Products containing bifenthrin, deltamethrin, or cyfluthrin are commonly used for this purpose. Reapplication every few months is typically needed, especially after rain.
For black widows or desert brown spiders in particular, targeted treatment of known harborage areas—cracks in block walls, corners of sheds, under patio furniture—is more effective than broad spraying.
Consider Natural Repellents
Peppermint oil diluted in water and sprayed along entry points is a popular natural deterrent. While its effectiveness is anecdotal and generally short-lived compared to chemical treatments, it can be useful as a supplementary measure, especially in areas where you’d prefer to avoid insecticides—like a child’s bedroom or a food preparation area.
Diatomaceous earth, a fine powder made from fossilized algae, can be applied in dry areas like inside wall voids or along baseboards. It damages the exoskeletons of spiders and insects on contact, causing dehydration.
When to Call a Professional
For most homeowners, a combination of prevention and DIY control measures is sufficient. However, there are situations where professional pest control is the right call:
- You’ve identified or suspect black widows or desert brown spiders in or around your home, especially if you have children or pets
- DIY treatments haven’t reduced activity after 2–3 weeks
- You’re finding spiders consistently indoors despite preventative efforts
- You’re uncomfortable identifying or treating the species yourself
A licensed pest control company can apply more concentrated treatments, identify entry points you may have missed, and provide ongoing monitoring to prevent recurrence. In Tempe, look for companies with experience treating desert species specifically—they’ll be familiar with the local environment and the behavior of native spiders.
Staying on Top of Spider Activity Year-Round
Spider control isn’t a one-time task. Given Tempe’s climate, spiders are active for much of the year, with peak activity typically occurring in late summer and fall when temperatures begin to drop slightly and spiders seek shelter.
Building a few habits into your routine makes a significant difference:
- Inspect and remove webs monthly, particularly in garages, sheds, and outdoor furniture
- Check boxes and bags brought in from storage before unpacking them inside
- Shake out shoes, gloves, and clothing that have been left in the garage or outdoors
- Reapply perimeter treatments every 60–90 days
- Keep up with general pest control to reduce the insects that attract spiders
Take Back Your Home—One Step at a Time
Spider control in Tempe comes down to consistency. No single product or strategy eliminates the problem permanently, but a combination of sealing entry points, reducing harborage sites, managing insect populations, and applying targeted treatments creates conditions where spiders struggle to establish themselves.
Start with the prevention basics, address any active infestations with appropriate control measures, and stay consistent with maintenance. If the problem is beyond what you can manage comfortably—particularly when venomous species are involved—don’t hesitate to bring in a professional.
Your home should feel comfortable and safe. With the right approach, it can be.