Brown Recluse Spider

Brown Recluse Spider: A Comprehensive Guide

The Brown Recluse Spider (Loxosceles reclusa) is a venomous species found primarily in the central and southern United States. Although it is relatively shy and prefers undisturbed areas, its venom can cause severe reactions in humans, making it a subject of concern for homeowners. This article provides a detailed guide on the Brown Recluse Spider, including its description, types, what attracts them, natural methods to get rid of them, and pest control methods.


Description of the Brown Recluse Spider

The Brown Recluse Spider is a small to medium-sized spider, known for its distinctive markings and venomous bite. It is typically light brown or tan in color with a characteristic dark violin-shaped mark on its back. This marking is the source of the common name “violin spider” or “fiddleback spider.”

Physical Features

  • Size: Adult spiders usually range from 0.5 to 1 inch (1.3 to 2.5 cm) in body length, with a leg span of up to 2 inches (5 cm).
  • Color: They are usually light to medium brown. The violin shape on their back points toward the spider’s head.
  • Eyes: The Brown Recluse Spider has 6 eyes arranged in 3 pairs (most spiders have 8 eyes).
  • Legs: Their long, slender legs are a reddish-brown color, often appearing somewhat translucent.

Types of Brown Recluse Spiders

While the Brown Recluse (Loxosceles reclusa) is the most well-known species, there are several other members of the Loxosceles genus, some of which are found in various regions of the world. They share similar characteristics but may vary in their venom potency and behavior.

  1. Loxosceles reclusa: The classic Brown Recluse found in the United States.
  2. Loxosceles laeta: Known as the Chilean Recluse, found in South America. Its bite is known to be more toxic and dangerous.
  3. Loxosceles rufescens: Commonly found in Europe and the Middle East, it has similar characteristics but is typically less dangerous.

What Attracts Brown Recluse Spiders?

Brown Recluse Spiders are attracted to environments that offer shelter, darkness, and a stable food supply. These spiders prefer undisturbed areas with minimal human activity.

Common Attractions

  • Dark, Hidden Spaces: Brown Recluse Spiders are nocturnal and are commonly found in attics, basements, closets, and behind furniture. They thrive in cracks, corners, and other places with low human traffic.
  • Dry, Warm Environments: They are drawn to dry, warm environments. During colder months, they may move into homes for warmth.
  • Insects: Brown Recluse Spiders feed primarily on small insects like ants, flies, and other pests.

How to Get Rid of Brown Recluse Spiders Naturally

Getting rid of Brown Recluse Spiders naturally involves a combination of preventive measures, habitat modification, and repellents. Here are several natural methods to control or eliminate them:

1. Eliminate Hiding Places

  • Clean and Declutter: Brown Recluse Spiders like to hide in dark, undisturbed places. Reducing clutter in attics, basements, and closets removes potential hiding spots.
  • Seal Cracks and Gaps: Use caulk or weatherstripping to seal cracks and gaps in windows, doors, and walls, preventing spiders from entering your home.

2. Essential Oils Repellents

Certain essential oils are known to repel spiders. These oils can be diluted in water and sprayed around potential spider entry points and hiding spots.

  • Peppermint Oil: Known for its strong scent that repels spiders.
  • Lavender Oil: Effective in repelling various insects, including spiders.
  • Cedarwood Oil: Has a strong aroma that spiders dislike.
  • Eucalyptus Oil: Can also deter spiders from entering your home.

Mix 10-15 drops of essential oil with water and spray it around windows, doors, and other areas where you suspect spiders may be lurking.

3. Diatomaceous Earth

Diatomaceous earth is a natural, non-toxic powder that can be sprinkled in areas where Brown Recluse Spiders are found. It works by dehydrating the spiders and killing them without posing a threat to pets or humans.

4. Sticky Traps

Place sticky traps in areas where Brown Recluse Spiders are commonly found. These traps can help catch and monitor the presence of the spiders, providing a non-chemical way to reduce their population.


Pest Control Methods for Brown Recluse Spiders

If natural methods are not effective, professional pest control methods may be necessary. Pest control companies use several techniques to eliminate Brown Recluse Spiders and prevent future infestations:

1. Chemical Treatments

  • Insecticides: Professional pest control technicians often use insecticides designed to target Brown Recluse Spiders. These insecticides can be applied directly to cracks, crevices, and areas where spiders hide.
  • Residual Sprays: Residual insecticides remain active for extended periods and can help kill spiders when they walk across treated surfaces.

2. Dust and Powder Treatments

Pest control companies may use specialized dust or powder treatments, such as boric acid or diatomaceous earth, to treat areas where Brown Recluse Spiders are found. These treatments can be particularly effective in hard-to-reach areas.

3. Spider Barriers

Professionals may apply spider repellents around the perimeter of the home to create a barrier that prevents spiders from entering. These repellents can be made from chemical or natural ingredients, depending on the method chosen.

4. Fumigation

In extreme cases where an infestation is widespread, fumigation might be necessary. Fumigation involves using gas to eliminate pests from the home, including Brown Recluse Spiders. This method is more commonly used for large-scale infestations or in severe cases.


The Brown Recluse Spider is a venomous species that can be harmful if left unchecked, but it typically prefers to avoid human contact. By understanding what attracts them, implementing natural prevention methods, and knowing when to seek professional pest control, you can reduce the risk of Brown Recluse Spider infestations in your home. Regular cleaning, sealing cracks, and using natural repellents are key strategies for managing these spiders. If necessary, pest control services can provide effective solutions for eliminating and preventing future problems

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