Repel spiders instantly with one overlooked DIY trick: so simple you’ll try it today

Show summary Hide summary

• How cedarwood oil affects spiders and what research shows
  • What scientists found
  • Safety profile
• Simple recipe for a non-toxic cedar spider spray
• Where to spray and how often to apply
• Storage, longevity, and cost
• Precautions for people, children, and pets
• Buying tips and product choices

Spiders in corners, shoes, or the shower are unsettling, even if most species are harmless. For people who want to discourage these visitors without killing them or spraying harsh chemicals, a simple, natural option has gained attention: cedarwood oil. It’s cheap, easy to use, and can be turned into an effective DIY spray that sends spiders packing.

How cedarwood oil affects spiders and what research shows

Spiders perceive odors through tiny sensory hairs on their legs. That means airborne scents and surface contact both matter. Certain compounds in cedarwood oil create an environment spiders avoid.

What scientists found

Studies have shown cedarwood extracts can repel spiders when applied to surfaces or dispersed nearby. The effect comes from the oil’s volatile chemicals, which interfere with a spider’s ability to tolerate an area.

Safety profile

The U.S. EPA recognizes cedar oil as generally safe for many household uses when diluted. Still, essential oils are concentrated substances. Careful dilution and cautious use around pets is recommended.

Simple recipe for a non-toxic cedar spider spray

Making an effective spray takes minutes and uses common items. The result is a fresh-smelling barrier you can spritz along entry points and pet-free zones.

1. Use a clean 1-quart spray bottle.
2. Fill the bottle with filtered or tap water.
3. Add 6–10 drops of cedarwood essential oil per quart of water.
4. Add 2–3 drops of unscented dish soap to help the oil mix.
5. Close the bottle and shake vigorously before each use.

Tip: For a stronger scent, increase oil slowly. Never use undiluted oil on surfaces or skin.

Where to spray and how often to apply

Target spots spiders favor and typical entry routes. Regular application keeps the scent present and discourages new webs.

• Windowsills and frames
• Exterior door thresholds and frames
• Basement and attic access points
• Closets, under furniture, and inside rarely used shoes
• Garage corners and storage shelves

Apply once a week during active months or after heavy rain. Reapply monthly for maintenance. If the scent fades sooner, spray again.

Storage, longevity, and cost

A small bottle of cedarwood oil is inexpensive and lasts a long time. When diluted, a quart of spray can cover many applications.

• Store oil in a cool, dark cupboard.
• Keep the prepared spray away from direct sunlight.
• Use within several months for best potency.

Overall, the DIY route is economical compared with repeated professional treatments.

Precautions for people, children, and pets

Essential oils are concentrated and can irritate skin or mucous membranes. Avoid spraying directly on people, infants, or pets. If you have cats, consult your veterinarian before widespread use. Perform a small surface test to check for staining or finish damage.

• Do not apply undiluted oil to fabrics or leather.
• Avoid spraying near pet food and water bowls.
• If irritation occurs, discontinue use and ventilate the area.

Buying tips and product choices

Look for pure cedarwood oil labeled for aromatic or topical use. Avoid blends that hide concentration levels. A four-ounce bottle is a good starter size.

• Choose reputable brands with clear ingredient lists.
• Prefer glass bottles to preserve oil quality.
• Buy unscented dish soap to keep fragrances minimal.