How to Get Rid of Black Widow Spiders Safely

No more residing with these terrifying creatures

Close-up of a black widow spider
Photo: JasonOndreicka / iStock / Getty Images Plus / Getty Images
Close-up of a black widow spider
Photo: JasonOndreicka / iStock / Getty Images Plus / Getty Images
SKILL LEVEL
Challenging
COMPLETION TIME
2 hours
COST
$25–$50
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What you'll need:
TOOLS
  • Glass jar
  • Protective gloves and clothing
  • Spray bottle
  • Vacuum
SUPPLIES
  • Chemical insecticide
  • Essential oils
  • Sticky traps

The black widow spider is a source of terror, known for its striking appearance and venomous bite. Despite being reclusive and rarely a danger to people, the mere sight of a black widow spider can instill fear in anyone. For those looking to remove these daunting eight-legged intruders, it is important to learn how to remove black widow spiders from your space safely.

Prepping to Get Rid of Black Widow Spiders

Black widow spiders are notorious for their venomous bites, which can potentially be dangerous to humans. However, black widow bites are relatively uncommon, and fatalities from them are extremely rare, especially in areas where medical treatment is readily available.  Still, it's essential to know the potential risks of completing this project independently.

Most people bitten by a black widow spider experience only mild to moderate symptoms. Pain is a common characteristic of a black widow spider bite and can be accompanied by swelling, muscle cramps, and spasms, particularly in the abdomen and back. Some individuals may experience nausea, vomiting, profuse sweating, mild fever, and chills. Certain groups, such as young children, older people, or those with weakened immune systems, may be more susceptible to the effects of black widow venom and require prompt medical attention.

To prevent black widow spider bites, take proper precautions. Wear protective gloves and clothing when accessing known sightings or entry points. Be cautious when reaching into dark or secluded areas where spiders may hide.

  1. Use a Vacuum

    If performed correctly, utilizing a vacuum cleaner to eliminate black widow spiders can be a safe and successful approach. Since these spiders possess venom and their bites can lead to severe reactions or discomfort, vacuuming allows for capture without direct contact, reducing the chances of being bitten.

    Before you start, wear appropriate protective gear, including gloves and long sleeves, to reduce the risk of exposure. Identify the location of the black widow spider and any webs it has built. Ensure that the vacuum cleaner works well with a clean filter or bag.

    Carefully approach the spider slowly with the vacuum hose or attachment, exercising patience and avoiding sudden movements that could startle it. Use the vacuum hose to delicately suction the spider into the vacuum and ensure it is securely held in the collection chamber or bag.

    Once the spider has been captured, vacuum up any remaining webs or debris in the area to eliminate any scent markers that could attract other spiders. Ensure the vacuum bag or container is properly sealed to prevent any escape. If you have a bagless vacuum, empty its contents into a trash bag and tie it securely, placing it in an outdoor garbage bin.

    Afterward, clean the vacuum hose and attachments thoroughly to remove any traces of spider silk or debris to prevent any transfer of spider scent to other areas of your home.

  2. Catch and Release

    A man catching a spider with a glass
    Photo: Elva Etienne / Moment / Getty Images

    When attempting to remove a black widow spider using a catch and release technique, gather a container of either glass or plastic equipped with a lid. You will also need a stiff piece of cardboard. Take precautionary measures by wearing protective clothing and gloves.

    To safely capture a black widow spider, it is essential to approach it with caution and avoid sudden movements. Place a container over the spider gently, ensuring it is fully enclosed. Once the spider is trapped, slide a piece of cardboard under the container to prevent it from escaping. Lift the container and cardboard together, holding them firmly to maintain control of the spider.

    Place the lid on the container cautiously before taking it with the spider to a safe location outdoors, far away from your home. Select a suitable area that will not endanger the spider or other individuals. Tenderly lift the container and permit the spider to crawl onto the ground.

  3. Use Sticky Traps

    To trap black widow spiders, it's best to purchase specialized sticky traps or glue boards with a strong adhesive capable of securely holding them. Place these traps in strategic locations where the spiders are likely to be found, such as corners, baseboards, behind furniture, and areas with high spider activity.

    Keep an eye on the traps regularly to check for any captured spiders. If you find a spider caught in the trap, carefully fold the trap inwards while wearing protective gloves to completely enclose the spider within the adhesive. Make sure to dispose of the trap in a sealed container or plastic bag to prevent the spider from escaping.

  4. Use Chemical Insecticide

    When choosing an insecticide against spiders, opt for one labeled explicitly for black widow spiders if possible. Ensure the product is safe for indoor use if you treat areas inside your home, and follow the label instructions carefully.

    Protect yourself by wearing gloves, long sleeves, long pants, and safety goggles. Apply the insecticide directly to areas where black widow spiders are known to hide, such as cracks, crevices, corners, and entry points. Avoid applying the insecticide in a broad manner.

    While this may be an effective way to keep these spiders away, black widows can pose a safety risk. Therefore, removing them from the home is better to ensure your and your family's safety.

  5. Spray With a Natural Repellent

    A person spraying a surface with a natural repellent
    Photo: Lucas Ninno / Moment / Getty Images

    The potent scents of eucalyptus, lemon, peppermint, and tea tree oil repel black widows due to their keen sense of smell. The spiders employ their feet to detect odors, and the dispersal of these potent fragrances may effectively keep black widows at bay.

    If using an essential oil as a natural spider repellent, dilute it with water in a spray bottle. If you opt to use lemon, squeeze the juice of a lemon into a spray bottle filled with water. Spray the solution at common entry points to deter them.

    Like an insecticide, a natural repellent may deter the spiders but won't kill them. Catching and releasing them is your best bet to ensure they are removed from the home. Or, you can choose to hire an exterminator.

DIY vs. Hiring a Pro

Due to the risk of injury posed by black widow spiders, pest control is the safest option for ridding these pests. While most homeowners are adept at following through with eliminating spiders, the risk of injury is great. For one-time service, the pest control cost ranges between $300 and $500, which would be much less than associated medical costs if you get bitten.

Frequently Asked Questions

Attempting to kill a black widow spider can pose a significant health risk. When these arachnids feel threatened, they are more likely to attack, increasing your chances of getting bit. It's better to trap the spider and release it from a location far away from your residence.

Black widow spiders often live near residential areas, drawn by the promise of shelter and a steady supply of prey. These arachnids gravitate towards dark, undisturbed hiding places like crawl spaces, garages, and cluttered areas where they can build their webs and remain hidden from sight. By keeping homes clean and clutter-free, homeowners can reduce the risk of attracting black widow spiders.

Black widow spiders are known to be highly active during the warmer months of the year, typically from late spring to early fall. Their activity levels are observed to surge with increasing temperatures, especially during the evening and night hours when they actively search for prey and build their webs. However, in areas with moderate or mild climates, the spiders remain active throughout the year as long as temperatures are warm. Conversely, in colder climates, they may exhibit decreased activity or even take shelter indoors during the winter season.

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