Best Spray to Kill Black Widows
Protecting homes from black widows and other arachnids requires a mix of fast-acting formulas, residual protection, and practical application. This guide examines top spray products designed to target black widows and related pests, highlighting how quickly they act, how long they last, and where they work best. Learn what to look for when choosing a spider-killing spray and how to apply it safely for indoor and outdoor use.
| Product | Brand | Key Benefit | Typical Use |
|---|---|---|---|
| Hot Shot Spider & Scorpion Killer | HOT SHOT | Fast-acting on contact, residual for months | Indoor/outdoor spray to target black widows and related pests |
| Wet & Forget Miss Muffet’s Revenge | Wet & Forget | Long-lasting barrier up to 12 months | Indoor and outdoor spider control with attached sprayer |
| Terro Scorpion Killer Spray | Terro | Immediate kill with up to 6 weeks residual | Crack-and-crevice and spot treatments |
| Terro T2302 Spider, Ant, Roach Spray | Terro | Kills multiple pests on contact | Two-pack versatile spray for various hotspots |
| Raid Ant & Roach Killer Spray | Raid | Kills on contact with up to 13 weeks residual | Wide pest coverage including spiders and scorpions |
Note: This article presents objective information on commonly recommended sprays. Always follow product label directions for safety, containment, and environmental considerations.
Hot Shot Spider & Scorpion Killer (Aerosol)
- KILLS IN SECONDS: The fast-acting formula kills spiders, scorpions and other listed insects in seconds.
- KILLS FOR UP TO 4 MONTHS: Keeps killing ants (excluding harvester, pharaoh and fire ants), cockroaches and crickets for up to 4 months.
- KILLS BLACK WIDOW SPIDERS: Also kills black widow spiders as they hatch.
Wet & Forget Miss Muffet’s Revenge Indoor and Outdoor Spider Killer
- Kills spiders and creates a barrier inside and outside the home to keep them away for up to 12 months with just one application.
- Attached sprayer for quick and easy application with a spray range of up to 10 feet for hard-to-reach places.
- Treat all areas where spiders are found; spray until wet but not soaking for long-lasting results.
TERRO Scorpion Killer Spray
- KILL SCORPIONS & MORE: Kills scorpions, spiders, ants, roaches, crickets, and other insects.
- IMMEDIATE RESULTS: Kills on contact and provides residual control for up to 6 weeks.
- VERSATILE TREATMENT OPTIONS: The nozzle’s two-way spray is ideal for spot application or crack-and-crevice treatment.
TERRO T2302 Spider, Ant, Roach, and Other Insects Killer Aerosol Spray
- 2 spray bottles included; kills spiders (including Black Widow and Brown Recluse), ants, cockroaches, crickets, scorpions, and more.
- Kills on contact for rapid reduction of pest activity.
Raid Ant & Roach Killer Spray
- Kills a wide variety of insects including cockroaches, waterbugs, palmetto bugs, ants, silverfish, carpet beetles, crickets, earwigs, and household spiders.
- Kills on contact and keeps killing with residual action for up to 13 weeks.
- Special formulation with a fresh scent and no lingering chemical odor for some applications.
Buying Guide: Key Purchase Considerations
Choosing the right spray to kill black widows involves balancing immediate effectiveness, residual protection, and safe usage in and around living spaces. Consider the following:
- Target pests and spectrum: Many products cover spiders, scorpions, ants, and roaches. If black widows are the primary concern, verify that the formula lists them explicitly and note any residual period.
- On-contact vs. residual action: Some formulas kill on contact, while others provide longer-lasting barriers. For ongoing protection, favor products with residual effects that suit your space.
- Application method: Sprayers with extended nozzles or attached sprayers help reach corners, baseboards, and cocklofts. Two-way spray nozzles offer versatility for cracks and crevices.
- Indoor vs. outdoor use: Check labeling for where the product can be applied. Outdoor spray may be used around eaves and entry points, while indoor use often requires safer formulations.
- Safety and infant/pet considerations: Read label warnings, ventilation needs, and whether you should temporarily restrict pet access during application.
- Residual duration: Longer residuals mean less frequent applications but may require careful placement away from edible plants and food prep areas.
- Odor and user experience: Some formulations have noticeable scents; others emphasize low odor. Consider odor sensitivity in living spaces.
- Product availability and branding: Reputable brands with clear usage instructions tend to offer more predictable performance and safer handling.
When applying any pesticide, follow all label directions, wear protective gear as recommended, and store products safely away from children and pets. For best results, combine vigilant home maintenance (sealing cracks, reducing clutter, removing webbing) with regular spray treatments in problem zones such as entryways, basements, garages, and under porches.