What Brown Widow Spiders and Their Egg Sacs Mean for Your Home
- 6 days ago
- 3 min read
If you live in Rialto, Fontana, or San Bernardino, chances are you’ve seen more spiders around your home over the last few years. One that’s becoming especially common in the Inland Empire is the Brown widow spider.
At first glance, they don’t always look dangerous. They’re lighter brown than black widows and sometimes look almost harmless. But when you start noticing their egg sacs, that’s when it becomes a real problem.
Let’s talk about why brown widows show up, where they like to hide, what makes their egg sacs different, and why you don’t want to wait to deal with them.
Why Brown Widow Spiders Are Showing Up in Rialto, Fontana, and San Bernardino
Southern California’s warm climate is perfect for brown widows. Mild winters and long summers allow them to reproduce almost year-round.
Areas like Rialto, Fontana, and San Bernardino provide everything they need:
Stucco walls and block fencing
Patio furniture and BBQ islands
Garage storage areas
Thick landscaping and irrigation zones
Quiet corners under eaves and rooflines
Brown widows are what we call “structure-loving spiders.” They prefer building webs on homes instead of deep in bushes.
That’s why homeowners searching for brown widow spider control in Rialto or how to get rid of brown widows in Fontana are seeing them right outside their doors.
Where Brown Widow Spiders Like to Make Webs
Unlike some spiders that spin beautiful round webs in trees, brown widows build messy, tangled webs. They usually stay low to the ground and close to human activity.
Common places we find brown widow webs during inspections in San Bernardino County include:
Under patio chairs and tables
Inside kids’ outdoor toys
Behind decorative wall hangings
Around electrical boxes and hose bibs
Inside garage corners and storage bins
The problem is you don’t always see the spider first. You usually see the egg sac.
Brown Widow Egg Sacs: The Real Concern
Brown widow egg sacs are one of the easiest ways to identify them. They look like small tan or beige balls covered in tiny spikes. Almost like a little sea urchin.
Each egg sac can contain 100 to 200 spiderlings.
That means one unnoticed egg sac behind a patio chair in Rialto can quickly turn into a much bigger brown widow infestation around your home.
If you’ve searched for brown widow egg sacs in Fontana or spiky spider egg sac in San Bernardino, you’ve probably seen exactly what we’re talking about.
And here’s the part most homeowners don’t realize:
They don’t just lay one egg sac. A single female can produce multiple sacs over time.
Why You Don’t Want to Wait
It’s easy to ignore one web. It’s easy to knock down one egg sac.
But brown widows reproduce quickly, and the longer they’re left untreated, the more established they become around your property.
Here’s what happens when homeowners wait:
More egg sacs hatch
Spider activity spreads to new areas
Webbing builds up around entry points
Risk of bites increases around patios and garages
While brown widows are generally less aggressive than black widows, they are still venomous. And if you have kids playing outside or pets exploring the yard, it’s not something you want to gamble with.
If you’re dealing with brown widow spiders around your patio in Rialto or seeing brown widow egg sacs on your home in Fontana, it’s better to take care of it early.
Professional Brown Widow Spider Control in Rialto, Fontana & San Bernardino
At TruPest Solutions, we don’t just spray and leave. We focus on:
Full exterior web removal
Targeted treatment around entry points
Treatment of eaves, patio covers, and fence lines
Reducing insect populations that attract spiders
Spiders show up because food is available. If you control the insects, you reduce the spider pressure.
Living in the Inland Empire means dealing with spider seasons, especially during warmer months and after windy days when webs spread.
If you’ve noticed brown widow spiders, spiky egg sacs, or messy webs around your home in Rialto, Fontana, or San Bernardino, don’t wait for it to multiply.
Call TruPest Solutions today at 951-334-5288 today for professional brown widow spider control. We’ll inspect your property, remove active webs and egg sacs, and create a treatment plan that keeps them from coming back.
