The label is the law. Rates and restrictions below are taken from the product labels listed under Sources. Your product's own label governs; read it before you mix or apply. Mixing calculator · Disclaimer
- Active ingredient
- Prallethrin
- Chemical class
- Pyrethroid; IRAC Group 3A sodium channel modulators. Cypermethrin, its partner in this can, is in the same group.[2]
- Mode of action
- IRAC Group 3A: Sodium channel modulators: pyrethrins and pyrethroids[2]
- Signal word
- Raid Wasp & Hornet Killer 33: Caution[1]
Outdoor use only
The label limits this product to outdoor use. Spraying is restricted to spots of two square feet or less, cracks and crevices, sheltered eaves and soffits, and walls above soil or lawn that doesn't drain to storm drains.[1]
Don't spray in rain, or when rain could arrive before the spray has had at least 4 hours to dry, and don't spray when wind tops 15 mph. Avoid soaking asphalt.[1]
Where it is used
Spray in early morning or early evening, when the insects are least active. Stand a safe distance away, not directly under the nest, with the wind at your back.[1]
Hold the can as upright as you can, aim at the nest and soak it thoroughly so the whole colony is killed.[1]
Wait at least 24 hours before you take the nest down.[1]
Remove food and cooking utensils first, and cover or wash food-handling surfaces afterward. Don't use it on edible crops.[1]
Products and registrations
| Product | Registrant | EPA Reg. No. | Active % | Formulation | Signal word |
|---|---|---|---|---|---|
| Raid Wasp & Hornet Killer 33[1] | S.C. Johnson & Son, Inc. | 4822-553 | 0.02% | aerosol jet spray (with 0.05% cypermethrin) | Caution |
Safety and environmental hazards
People
Signal word CAUTION: avoid contact with skin or clothing and wash after handling. The can is extremely flammable and under pressure, and may burst above 130°F.[1]
Pets
Don't spray toward any person or pet, or let drift reach them. Keep people and pets away during spraying and until all spray has dried, and never apply it to pets.[1]
Bees and pollinators
Bees are among the insects this can is labeled to kill, along with wasps and hornets. The label gives no separate pollinator statement but says to avoid spraying vegetation directly.[1]
Fish and water
Extremely toxic to fish and aquatic invertebrates. Don't use it on or near water, and keep it out of drains, gutters and storm sewers.[1]
Common questions
- When should I spray a wasp nest?
- Early morning or early evening, when insect activity is lowest, according to the Raid label.[1]
- How long after spraying can I knock down the nest?
- Wait at least 24 hours before removing it.[1]
- Can I use Raid Wasp & Hornet Killer indoors?
- No. The label says it is for outdoor use only.[1]
Sources
- U.S. EPA Pesticide Product Label System, “Raid Wasp & Hornet Killer 33 label, EPA Reg. No. 4822-553 (EPA-stamped, Feb. 13, 2026).” www3.epa.gov/pesticides/chem_search/ppls/004822-00553-20260213.pdf (accessed 2026-10-06)
- Insecticide Resistance Action Committee, “IRAC Mode of Action Classification Scheme, Version 11.5 (Feb. 2026).” irac-online.org/documents/moa-classification/ (accessed 2026-10-06)