Why Spiders Move Indoors in Fall and How to Keep Them Out This Winter 

December 1, 2025
Why Spiders Move Indoors in Fall and How to Keep Them Out This Winter 

When weather gets cold outside, spiders start looking for warm places. They crawl under doors or through vents and hide in quiet corners around the house. Spiders already inside your home move closer to warmth to stay comfortable. 

Here’s why you’re seeing more spiders this time of year and what you can do to keep them out once the Texas temperatures drop. 

Why You’re Seeing More Spiders as the Temps Drop 

They’re Following Their Food 

As soon as it cools down, insects head inside to stay warm and spiders just follow the buffet. When other bugs move in, spiders see your home as easy hunting ground. More bugs means more spiders, plain and simple. 

They’re Looking for Warm, Safe Spots  

They can survive the cold, but a warm attic or quiet garage feels a whole lot better than the winter air outside. 

How Spiders Get Inside Your Home 

Tiny Gaps You Don’t Even See 

Spiders don’t need much room to sneak inside. They crawl through tiny gaps under doors, around windows, or even small cracks in brick walls you’d never think twice about. 

Lights Attract Their Prey 

Outdoor lights pull in flying insects, and spiders hang around to hunt them. If your porch light or garage light stays on all night, that glow becomes a dinner bell and before long, webs start appearing in corners and eaves. 

Why Spiders Love Your Home 

Hidden Corners and Clutter 

Spiders love quiet, undisturbed spaces, the back of closets, cardboard boxes, storage bins, and dusty corners in the garage. When your home gives them plenty of hiding spots, they’ll gladly settle in. 

Too Many Bugs, Too Many Spiders 

If you’ve got other bugs, you’ve got spider food. Roaches, moths, silverfish, all of them make your home a five-star restaurant for spiders. 

Comfortable Indoor Climate 

With the heat and AC running year-round, Texas homes stay cozy, and that keeps spiders active when they’d normally slow down outside. 

Texas-Style Prevention: How to Keep Spiders Out This Winter 

Seal Up Cracks and Gaps 

Take a walk around your home and check every window, door, and vent. Seal up cracks, fix old weatherstripping, and you’ll block a lot of spots spiders use to sneak in. 

Control the Food Chain 

Get rid of the bugs spiders eat. Vacuum regularly, wipe up crumbs, and don’t let other pests make themselves at home. If you control the insects, spiders will have no reason to stay. 

Declutter Your Spaces 

Stacks of boxes in your garage or attic make perfect homes for spiders. Keep storage clean and off the floor, and always shake out your holiday stuff before bringing it inside. 

Adjust Lighting and Landscaping 

Use yellow or warm outdoor lights, they don’t pull in as many bugs. Keep bushes and branches trimmed back so spiders can’t crawl right up to your windows. 

Use Safe, Smart Treatments 

You can use things like peppermint oil or vinegar spray around doors and windows, but if spiders keep coming back, call a pro. A local expert knows where they hide and how to treat them safely. 

Let the Experts Handle It 

Tired of webs and spider sightings? Let EcoStar Pest Control Carrollton Company handle it. 
We know where they hide and how to keep them out.  Quick service, lasting results, that’s what we’re known for. 

FAQs 

Q1: Are indoor spiders dangerous? 
Most house spiders in Texas aren’t harmful, though species like the brown recluse and black widow can pose risks. If you’re unsure what you’re seeing, don’t try to handle it — call a pro

Q2: I saw just one spider. Should I worry? 
Not necessarily, but if you keep spotting them in the same areas, it’s a sign others may be hiding nearby. 

Q3: Can cleaning alone keep spiders away? 
Cleaning helps a lot — it removes webs, eggs, and other insects. But sealing cracks and regular pest treatments make the biggest difference. 

Q4: Will spiders die off in winter? 
Not in Texas. Our mild winters mean spiders often stay active indoors all season. 

Q5: Are professional spider treatments safe for pets and kids? 
Yes. Modern pest control products are family- and pet-safe when applied by trained professionals.