By Camille Landry, M.S. Entomology, FullScope Pest Control
If it seems like every porch light, window corner and eave suddenly has a spider web this time of year, you aren’t imagining things.
Walk outside in the morning and you may find a web stretched across the porch that seemingly appeared overnight. Around outdoor lights, you might find several spiders taking advantage of an easy meal.
And while Charlotte’s Web taught us that a spider in the barn might be a wise and loyal friend, the one building a web directly across your front door at face level seems to have missed the lesson on friendship.
Unfortunately, she probably isn’t trying to write “Some Pig” in the web, either. She’s there for a much simpler reason: dinner.
So, why does fall seem to bring out all the spiders?
The spider isn’t always the problem—it’s often the clue
One of the most important things to understand about spiders is that they don’t randomly choose a home.
They’re predators, and predators go where they can find food.
Outdoor lights attract moths, mosquitoes, flies and other insects. Those insects attract spiders. Eaves, covered porches, landscaping and areas protected from wind and rain can also provide excellent locations for building webs.
If you have a lot of spiders around your home, the better question may not be, “How do I get rid of the spiders?”
It may be, “Why is there so much food here for them?”
That’s an important distinction.
Lake living means spider living
If you live around Lake Livingston or one of our other heavily wooded areas, spiders are simply part of the environment.
Living near the lake gives us plenty to enjoy—trees, water, wildlife and beautiful evenings outside. But those same conditions also support an incredible amount of insect life.
Water, vegetation, exterior lighting, boat docks, porches and wooded lots can attract tremendous numbers of flying insects. And wherever you have insects, you’re going to have predators that eat them.
That includes spiders.
Homes near the lake may have webs around docks, boathouses, porch ceilings, exterior lights, windows and eaves. In many cases, those spiders are actually helping control other insects.
So, seeing spiders outside your lake house doesn’t automatically mean something is wrong. Sometimes it simply means you live in a healthy ecosystem with a very active food chain.
Of course, there’s a big difference between appreciating nature and walking face-first through a spider web at 6:30 in the morning. Which I tend to experience often in my own life.
That’s where most people’s appreciation ends.
Why do we notice more spiders in the fall?
Several things can contribute to increased spider sightings during late summer and fall.
Many spiders have spent months growing and are simply larger and easier to notice by this point in the season. Mature spiders may also be more active as they search for mates or establish webs.
At the same time, insect activity around our homes provides plenty of opportunities for a hungry spider.
Add our Southeast Texas weather to the equation, and conditions can remain favorable for insects—and therefore spiders—well into fall.
Are our spiders dangerous?
This is probably the question I hear most often.
Nearly all spiders have venom that they use to subdue their prey, but only two types found in Texas are generally considered medically significant to people: black widow spiders and brown recluse spiders.
Black Widows
Black widows are probably the easier of the two to recognize. Adult females are shiny black and are known for the red hourglass-shaped marking on the underside of the abdomen.
They tend to prefer protected, undisturbed locations. Around homes, that can include garages, sheds, wood piles, outdoor storage areas and underneath objects that haven’t been moved in a while.
Brown Recluse
Brown recluse spiders are more difficult for homeowners to identify accurately.
People frequently assume that any small brown spider is a brown recluse, but there are many harmless brown spiders that can be mistaken for one.
Brown recluses tend to prefer quiet, protected locations. Indoors, they may be associated with storage areas, boxes, closets and other places that remain relatively undisturbed.
This is also why I encourage people not to identify a spider based solely on a photograph they found online. Spider identification involves looking at several physical characteristics, and color alone isn’t enough.
Most spiders aren’t looking for a fight
Even when we’re talking about black widows and brown recluses, it’s important to keep the risk in perspective.
Spiders aren’t hunting people.
Bites are generally associated with situations where a spider becomes trapped against the skin or is accidentally disturbed—for example, when someone reaches into a stored box, puts on clothing or shoes that have been sitting undisturbed, or moves materials where a spider has been hiding.
A little awareness goes a long way.
Wear gloves when moving stored materials, shake out shoes or gloves that have been sitting in garages or sheds, and be cautious when reaching into dark areas you can’t see.
What about spiders inside the house?
An occasional spider can wander indoors through a doorway or small opening. Repeated sightings are different.
If you’re consistently finding spiders inside, particularly in garages, closets, bathrooms, storage areas or other undisturbed spaces, look beyond the spider itself.
Spiders need food to survive. Regular spider activity indoors can indicate that other insects are present as well.
This is why pest control shouldn’t simply be about spraying whatever bug happens to be visible that day. Good pest management asks why the pest is there in the first place.
A few simple things homeowners can do
Start outside.
Remove webs around doors, windows and eaves when they appear. Check weather stripping and door sweeps for gaps. Keep shrubs and vegetation trimmed away from the structure and reduce unnecessary clutter around the foundation.
Pay particular attention to exterior lighting. Bright lights can essentially become an insect buffet after dark. Where practical, changing the placement or type of exterior lighting can help reduce the insects gathering immediately next to the house.
For lake homes, cabins and weekend properties, also pay attention to areas that may sit undisturbed for longer periods. Stored life jackets, patio cushions, boxes, outdoor equipment, sheds and boathouses can all provide protected hiding places.
Don’t just treat the spider. Find the source.
One of the principles we emphasize at FullScope Pest Control is source-first pest management.
If we only remove a spider or knock down its web without considering why it chose that location, another spider may eventually take its place.
Understanding the pest, its food source, its environment and how it’s interacting with the structure gives us a much better chance of solving the actual problem.
So, the next time you walk through a giant spider web on your way out the door—and perform the inevitable dance that follows—remember:
The spider may not be your biggest pest problem.
It may just be the one showing you where to look.
And if you happen to see the words “Some Pig” written in the web?
Maybe leave that one alone.
Camille Landry holds a Master of Science in Entomology and is an owner of FullScope Pest Control, serving communities throughout Southeast Texas.