Updated: July 6, 2025

Cellar spiders, often known as “daddy longlegs,” are common inhabitants of dark, damp corners such as basements, cellars, and garages. While they are generally harmless and even beneficial in controlling other insect populations, many people find their presence unsettling and seek ways to remove them safely. Using chemical pesticides can pose risks to your health, pets, and the environment. Fortunately, there are effective methods to control and remove cellar spiders without resorting to harsh chemicals.

In this article, we will explore how to identify cellar spiders, understand their behavior, and implement safe, natural strategies for removal and prevention.

Understanding Cellar Spiders

Before tackling a cellar spider problem, it’s essential to understand what these creatures are and why they might be present in your home.

What Are Cellar Spiders?

Cellar spiders belong to the family Pholcidae. They have distinctive long, thin legs and small bodies. Unlike some spiders that build dense webs in strategic locations to trap prey quickly, cellar spiders spin loose, messy webs primarily in undisturbed corners. They feed on small insects and sometimes even other spiders.

Are Cellar Spiders Dangerous?

No. Cellar spiders are generally considered harmless to humans. Their venom is weak and unable to penetrate human skin. Rather than posing a threat, they actually help reduce populations of more harmful insects like mosquitoes and flies.

Why Do Cellar Spiders Enter Homes?

  • Shelter: They prefer dark, quiet areas with minimal disturbance.
  • Humidity: Basements and cellars often provide the moist environment they thrive in.
  • Food: Presence of other insects can attract them indoors.

Knowing their habits helps us create conditions that discourage their presence.

Non-Chemical Methods to Remove Cellar Spiders

If you want to remove cellar spiders safely without using chemicals, here are several techniques you can apply:

1. Physical Removal

The simplest way to get rid of cellar spiders is through physical removal.

  • Vacuuming: Use a vacuum cleaner with a hose attachment to suck up spiders and their webs. This method is effective for clearing spider webs from hard-to-reach corners.
  • Manual Capture: Use a jar or container along with a stiff piece of paper or cardboard. Trap the spider inside the jar and release it outside at a good distance from your home.

Tips:
– Wear gloves if you feel uneasy.
– Empty the vacuum bag or canister outside immediately after use to prevent spider escape.

2. Regular Cleaning

Spiders thrive where their webs can remain undisturbed.

  • Dust and Vacuum Frequently: Clean corners, ceilings, baseboards, window sills, and around furniture regularly.
  • Remove Webs Immediately: Use a broom or duster to sweep away webs as soon as you see them forming.

Maintaining a clean environment discourages spiders from settling down.

3. Dehumidify the Area

Since cellar spiders prefer moist environments:

  • Use a dehumidifier in damp spaces like basements or cellars.
  • Fix any leaks or plumbing issues that contribute to excess moisture.
  • Improve ventilation by opening windows or installing fans where possible.

Lower humidity makes your space less attractive to cellar spiders.

4. Reduce Insect Food Sources

Cellar spiders feed on other insects; fewer insects mean fewer spiders.

  • Seal cracks around windows, doors, and walls to prevent entry of flies, mosquitoes, moths, and other bugs.
  • Use yellow or sodium vapor outdoor lighting which attracts fewer flying insects.
  • Keep garbage bins sealed tightly.
  • Avoid leaving food crumbs or standing water that attracts bugs.

5. Natural Repellents

Several natural substances may deter cellar spiders without harming humans or pets:

  • Essential Oils: Peppermint oil is a popular choice due to its strong scent which spiders dislike.

How to use: Mix about 10–15 drops of peppermint oil with water in a spray bottle. Spray around baseboards, corners, window frames, and other entry points weekly.

  • Vinegar: White vinegar has acetic acid that acts as a mild irritant.

How to use: Mix equal parts vinegar and water in a spray bottle. Spray directly on webs and spider hiding spots.

  • Citrus Peels: Spiders avoid citrus smells. Place dried orange or lemon peels near doorways or windowsills.

Note: Natural repellents may not eliminate spiders completely but help reduce their activity.

6. Use Sticky Traps

Sticky traps designed for insects can also capture wandering cellar spiders.

  • Place traps in corners along baseboards where you’ve seen spider activity.
  • Check traps regularly and dispose of caught pests promptly.

Sticky traps are non-toxic and an easy monitoring tool for spider presence.

Preventive Measures For Long-Term Control

Once you have reduced spider numbers using the above methods, follow these steps to prevent future infestations:

Seal Entry Points

Inspect your home’s exterior for gaps around doors, windows, vents, utility pipes, and foundation cracks. Seal these openings with caulk or weather stripping to block spider access.

Manage Outdoor Lighting

Since outdoor lights attract insects (spider prey), consider:

  • Using motion sensor lights instead of continuous outdoor lighting
  • Switching bulbs to less attractive options like yellow LED lights
  • Keeping porch lights off when not needed

Declutter Indoor Spaces

Spiders enjoy hiding in piles of boxes, firewood stacks, old clothes, or unused furniture.

Keep basements and storage areas organized and clutter-free for fewer hiding places.

Maintain Yard Hygiene

Keep vegetation trimmed away from your house walls. Remove leaf litter and debris near foundation areas which serve as harborage sites for insects and spiders alike.

When To Call A Professional

In most cases, non-chemical approaches will suffice for controlling cellar spiders due to their generally low nuisance level. However:

  • If you experience heavy infestations that seem unmanageable
  • If you notice structural damage caused by moisture encouraging spider populations
  • If you want expert advice tailored for your home environment

A pest control professional can offer integrated pest management strategies using non-toxic methods as well as targeted treatments if absolutely necessary.

Conclusion

Cellar spiders may be unwelcome guests in your basement or cellar but they rarely cause harm. Understanding their habits allows you to remove them safely without resorting to toxic chemicals that could endanger your family or pets.

Regular cleaning combined with physical removal techniques reduces spider numbers effectively. Dehumidifying your space along with sealing entry points prevents reinvasion. Using natural repellents like peppermint oil sprays adds an additional layer of defense while maintaining eco-friendly practices.

By following these safe removal tips consistently you can reclaim your home spaces from cellar spiders naturally—promoting a clean environment without compromising safety or health.

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