Spider Management
Spider Control in Palo Alto, CA
101 Exterminators provides spider control in Palo Alto with the focus where it belongs — western black widows (Latrodectus hesperus), which are native here and turn up in garages, sub-areas, meter boxes and stored patio furniture. Most other spiders in a Palo Alto house are harmless and eat the insects that would otherwise get in. We are licensed in California under SPCB Lic. #9119 and have worked Santa Clara County since 2005.
Warning Signs
Signs You Need Spiders Service in Palo Alto
Treatment starts with the harborage rather than the room. We work through garages, crawl spaces, sheds, wood storage, eave lines, patio furniture, and the meter and hose bib boxes that nobody opens, and we place product on the runways and voids where widows sit instead of broadcasting it across open floors. Webs and egg sacs come down by hand with a web brush, because a residual product does very little to the eggs inside a sealed sac. When the spider count is high across a whole property, the honest answer is usually the insect population feeding them, so we also look at exterior lighting, stored debris, and the ant or fly pressure driving the food supply.
Messy, irregular webs with unusually strong silk in garage corners, under benches, and behind stored boxes
A glossy black spider hanging belly-up in its web, with a red hourglass on the underside of the abdomen
Papery, spherical egg sacs about half an inch across suspended in the web
Cast skins and insect husks piling up under a web that stays in one spot for weeks
Spiders showing up indoors with the first rains of late fall
Heavy web buildup along eaves and porch lights, which points at an insect food supply more than a spider problem
A bite followed by worsening muscle pain or cramping, which calls for prompt medical evaluation
How It Works
Our Spiders Process in Palo Alto
Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in Palo Alto.
Inspection & Species Identification
We check the places widows favor first: garage corners and door tracks, the underside of patio furniture, wood piles, crawl space piers, utility boxes, and the gap behind shutters and wall fixtures. We identify what we find instead of treating every spider as a widow, since cellar spiders and orb weavers are common here and neither calls for the same response.
Web & Egg Sac Removal
Webs and egg sacs are brushed out by hand. A widow sac is a papery sphere roughly half an inch across, and the eggs inside are shielded from any surface product, so physical removal is the only part of the visit that deals with the next generation.
Targeted Harborage Treatment
Residual product goes on the surfaces widows cross: the backs of garage corners, sill plates, the underside of ledges and furniture, void openings, and the exterior band where wall meets soil. Placing it there uses less product than a broadcast spray and keeps it dry, which is what makes a residual last.
Conditions & Ongoing Prevention
We tell you which conditions on the property are doing the recruiting, whether that is wood stacked against siding, cardboard on a garage floor, an unscreened crawl vent, or a bright porch light pulling insects in all night. Properties that back onto open space usually do better on ongoing perimeter service, and single visits are available for one problem area.
Why 101 Exterminators
Spiders You Can Count On in Palo Alto
Widow-First Inspection
We prioritize the places people reach into without looking: garage shelving, wood piles, patio furniture, crawl space access hatches, and outdoor storage in yards where children play.
Egg Sacs Removed by Hand
Surface product does not reach the eggs sealed inside a sac. Brushing sacs out during the visit takes that generation out of the count before it disperses across the property.
Targeted, Not Broadcast
Product goes on runways, voids, and harborage rather than open floors and lawns. That is better placement for reaching a spider and it puts less product in the space your family uses.
The Food Supply Gets Addressed
Spiders follow insects. A general pest program that holds ants, flies, and moths down is the part of spider control that keeps working between visits.
Common Questions
Spider Control FAQs for Palo Alto
Where do black widows hide in a Palo Alto garage?
Low, dark and against something. Check the bottom corners of the walls, behind and underneath anything that has not moved in months, the underside of workbenches and shelving, the space behind stored paint and boxes, and the door track corners. The web is a coarse, irregular tangle rather than a flat circular orb, usually within two feet of the floor. Wear gloves when moving stored items in a Palo Alto garage, especially along the shared wall with the house.
Are brown recluse spiders found in Palo Alto?
No. Brown recluse spiders are not established in California, and reports here are nearly always misidentifications — the common brown spiders in a Palo Alto house are usually cellar spiders, false widows or one of the native ground spiders, none of which carry recluse venom. The medically significant spider in this area is the western black widow. A bite that produces spreading pain, cramping or a systemic reaction is a call to a physician, not to a pest company.
Do I need spider treatment if my Palo Alto house backs onto open space?
It depends on what you find, not on the address. Properties along the Pearson-Arastradero and Foothills boundary sit against oak woodland and chaparral where widows live outdoors permanently, so the structures nearest that edge — woodpiles, sheds, retaining walls, play equipment — are worth checking a few times a year. If you are finding widows and egg sacs where children or pets reach, treatment plus web removal makes sense. If you are finding orb weavers on the eaves, they are working for you.
Local Pest Pressure
Common Pests We Treat in Palo Alto
Every area has its own pest profile shaped by climate, housing, and geography. These are the pests we see and treat most often in Palo Alto — tap any one to learn how to identify it and what treatment involves.
Spider Control · Palo Alto
Free Pest Evaluation in Palo Alto
CA licensed and insured. Written estimate before any work begins. Urgent situations in Palo Alto are prioritized.