Why Spiders Become More Noticeable in August (and How to Keep Them Out)

common House Spider

As summer ends, many Ohio homeowners notice more spiders indoors. They’ve been around all summer but are now easier to spot.

Many male spiders roam in search of a mate, and your home may seem like the perfect place. August is peak spider season, so you’re more likely to see them in your home.

Knowing why spiders become active in late summer can help you keep them out of basements, garages, and attics.

Key Takeaways

  • Spiders are more noticeable in August because it’s mating season and they’re actively searching for partners.
  • Changes in weather and the availability of indoor food sources drive spiders inside.
  • Common hiding spots include basements, garages, attics, and cluttered storage areas.
  • Sealing entry points, reducing insect prey, and routine pest control are the best ways to prevent infestations.

Why Spider Activity Increases in Late Summer

Mating Season Brings Them Out

By August, many spiders, including house spiders, wolf spiders, and orb weavers, are fully grown and entering mating season. Males start roaming in search of females. They leave their hiding spots and may wander right across your living room floor.

Outdoor Conditions Push Them Inside

Late summer in Ohio often brings hot days and cool nights, which can push spiders indoors, especially if your home has gaps and insects.

Egg Sacs and Future Generations

Many spiders lay eggs during this time, and you might see small egg sacs tucked into spider webs in storage areas or corners of rooms. Each sac can contain dozens of spiderlings, which is why stopping an infestation early is essential.

Common House Spider Hideouts

Spiders don’t just wander. They gravitate toward spaces with warmth, shelter, and food.

  • Basements and crawl spaces: Dark, damp areas are perfect for web-building.
  • Garages and attics: Provide shelter and fewer disturbances.
  • Crevices and gaps: Along baseboards, around windows, and near utility lines.
  • Storage areas: Cardboard boxes and cluttered corners are prime hiding spots.

You might spot cellar spiders in webs, daddy longlegs in corners, or garden spiders near outdoor lights.

Spiders to Watch For in Ohio

While most Ohio spiders are harmless, two species deserve extra caution:

  • Black widow: Recognizable by the red hourglass marking, they prefer secluded spots like woodpiles or sheds.
  • Brown recluse spiders: Characterized by their light brown color and a violin-shaped marking, they can hide in stored clothing or undisturbed boxes.

If you see either of these spiders, avoid DIY removal and call a pest control professional right away.

How to Keep Spiders Out of Your Home

Seal and Repair

  • Use caulk to close gaps around windows, doors, and siding.
  • Add weatherstripping to exterior doors to block entry points.
  • Install screens on vents and check for tears.

Reduce Their Food Source

Spiders follow their food, so reducing other pest problems helps keep them away. Regular pest control services can target insects like ants, flies, and even termites that attract spiders.

Limit Attractants

  • Adjust outdoor lighting to reduce insect activity near the house.
  • Keep vegetation trimmed back from your home’s exterior.
  • Declutter garages, attics, and crawl spaces to remove hiding spots.

Regular Cleaning

Vacuum along baseboards, in corners, and under furniture to remove spider webs, egg sacs, and insects.

Stay Spider-Free Year-Round

Spiders are most visible in August, but prevention works best all year. Sealing entry points, reducing insects, and keeping your home clean make it far less inviting to them.

For larger spider infestations, EarthRite Pest Control offers local spider control services in Columbus and surrounding Ohio communities. 

Call us today for treatments that target spiders and the insects they eat, giving you long-term relief.

FAQs

Why do I see more spiders in my house in August?

August is peak mating season for many house spiders, so male spiders become more active and wander indoors in search of females. Weather changes and easy entry points also contribute to higher indoor spider activity.

Are the spiders I see in late summer dangerous?

Most are harmless, like cellar spiders or orb weavers, but Ohio also has black widow and brown recluse spiders. If you suspect either, avoid contact and call professional pest control.

What’s the best way to get rid of spiders?

Vacuum regularly to remove spider webs and egg sacs, seal cracks with caulk, reduce insect prey through pest control, and consider a seasonal treatment plan from a trusted pest control company like EarthRite.

Contributor
Scott Principal Owner
Scott

Principal Owner

EarthRite understands that every pest problem is different. This is why we offer several pest control services to common household pests.

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