How to Eliminate Spiders From Your Basement for Good

Basements attract spiders more than any other room. If you’re ready to get rid of basement spiders, start with these smart steps.

These tips will help reduce spider populations without using harsh chemicals, making your basement safer and more comfortable.

Start With Sealing and Exclusion

Seal Cracks and Entry Points

Spiders sneak through cracks in walls, foundations, and door frames. Seal them with silicone caulk or metal fill fabric.

Also, inspect vents and pipes. Seal large openings with foam and check screens for tears. Keep them closed or repaired.

Once the cracks are sealed, spiders will find it harder to enter and settle inside your basement.

Install or Replace Door Sweeps

Spiders can crawl in under basement doors. Door sweeps block this easy access. If yours is damaged, replace it right away.

Add weather stripping too. Together, they create a solid defense against crawling pests like spiders and insects.

Clean Up the Space

Declutter Your Basement

Spiders love clutter. Clear cardboard, papers, and unused gear that sit untouched for long periods.

Regular cleaning removes hiding spots. Vacuum corners, shelves, and behind furniture. Don’t forget to remove spider webs as well.

If you also clean your yard and move woodpiles away, you’ll reduce spider-friendly areas inside and out.

Reduce Moisture Levels

Spiders thrive in damp areas. So use a dehumidifier to lower humidity in your basement.

Fix leaks and check for standing water. Dry basements are far less attractive to pests.

Make Lighting Work for You

Adjust Outdoor and Indoor Light

Lights attract bugs—and bugs attract spiders. Switch to sodium vapor bulbs, which attract fewer flying insects.

Also, close blinds at night to keep light inside. This discourages spiders from building webs near windows or doors.

Try Natural and Effective Repellents

Use Peppermint or Essential Oils

Essential oils, like peppermint or citrus, repel spiders. Mix with water and spray on baseboards, corners, and storage bins.

Avoid porous surfaces as oils can stain. Also, ventilate your basement to balance strong scents.

Apply Diatomaceous Earth in Key Areas

Sprinkle food-safe diatomaceous earth in cracks, behind boxes, and along walls.

It dehydrates spiders on contact. For best results, keep areas dry and reapply regularly.

Manage Outdoor Conditions

Minimize Mulch Around Your Home

Mulch attracts insects that spiders love to eat. Keep it away from your foundation or replace it with rocks.

Reducing mulch near the house lowers the number of bugs that might wander inside your basement.

When to Take Action

Spiders play a role in controlling other pests. But if you see too many or feel unsafe, act fast.

To get rid of basement spiders, follow all these strategies together for long-term control.

Stay Informed, Stay Prepared

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A well-cared home starts with the right knowledge.