RAP SHEET

Black Widow

Latrodectus mactans

high CASE #MWP-0008

Venom 15x stronger than a rattlesnake's. Lives under your deck chair.

How We Take Them Down

  1. Direct contact insecticide application to webs, spiders, and egg sacs
  2. Residual perimeter treatment around foundation, crawl space vents, and doorways
  3. Dust application in crawl spaces and wall voids with suspected activity
  4. Removal of harborage conditions — clutter, woodpiles, and debris near the structure
  5. Glue board monitoring in garages, basements, and crawl spaces

Prevention Tips

  • Wear heavy gloves when handling firewood, rocks, or outdoor storage items
  • Shake out shoes, gloves, and clothing stored in garages or sheds before putting them on
  • Keep the area under outdoor furniture, decks, and play equipment clear of debris
  • Seal gaps around garage doors, vents, and crawl space entries
  • Reduce outdoor lighting that attracts insects, which in turn attract spiders

Fun Facts

Female black widows are the dangerous ones. Males are smaller, less venomous, and frankly have enough problems given their life expectancy around females.

Black widow silk is, pound for pound, stronger than steel. Scientists are actively trying to synthesize it for bulletproof applications. Your spider is basically armed with industrial cable.

Despite their fearsome reputation, black widows are reclusive and bites are rare — they typically bite only when trapped against skin. Still, "rare" is not the same as "never."

Only about 1% of black widow bites are fatal with modern medical treatment. That statistic is more comforting when you're not the 1%.

Field Notes

The black widow is one of the most venomous spiders in North America, and it has a talent for setting up shop exactly where you’re likely to reach your bare hand without looking — under deck furniture, inside gardening gloves left in the shed, behind the stored holiday decorations in the garage. The good news is that black widows are genuinely reclusive; they have no interest in you and will only bite when physically trapped against skin. The bad news is that their venom, while rarely fatal with treatment, causes a truly miserable syndrome — severe muscle cramps, pain, and spasms that can last days. Recognizing the shiny black body and distinctive red hourglass is your most important skill.