Pyrethroid mechanism of action diagram

How pyrethroid works — illustrated mechanism of action · PestControlBasics.com

OTC/DIY CAUTION

Cyfluthrin — Bayer PowerForce, Tempo SC Ultra

Active ingredient: cyfluthrin  ·  Residual: 60–90 days

⚠️ Don't buy duplicates. All brands listed contain the same active ingredient. Buying two different brands is buying the same pesticide twice.
⚖️ Educational use only. Always read and follow the full product label — the label is the law under FIFRA. Full disclaimer → | ⚗️ Mixing Calculator →

🏷️ Brand Names — Same Active Ingredient

Tempo SC Ultra — Bayer — professional SC 11.8%
Bayer PowerForce Multi-Insect — Consumer RTU
Baythroid XL — FMC — agricultural EC

🎯 What It Kills

✓ Cockroaches✓ Ants✓ Fleas✓ Ticks✓ Mosquitoes✓ Bed Bugs✓ Wasps✓ Spiders✓ Crickets

⚙️ How It Works

Cyfluthrin is a Type II pyrethroid that disrupts sodium channels in insect nerves causing paralysis. Excellent residual on porous surfaces and fast knockdown.

⚗️ Mixing & Application

Tempo SC Ultra: 8–16 ml per gallon. For 4-gallon backpack: 32–64 ml. Apply to cracks, crevices, and foundation perimeter.
Example
0.5 oz
per gallon
⚗️ Mixing Calculator
Enter your sprayer size and target rate — get the exact amount to pour. Backpack, hand sprayer, hose-end, or skid unit.
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⚠️ Safety

  • ⚠ Toxic to fish — keep away from water
  • ⚠ Apply evening only near flowering plants — toxic to bees when wet
  • ⚠ Cats sensitive to pyrethroids — keep off treated surfaces until dry

🐛 Pests This Treats — Learn More

Click any pest to view its full identification guide, biology, and treatment options.

🐛 Ants → 🐛 Bed Bug → 🐛 Cockroaches → 🐛 Cricket → 🐛 Fleas → 🐛 Mosquito → 🐛 Scales → 🐛 Spiders → 🐛 Ticks → 🐛 Wasps →

🌿 Environmental & Ecological Impact

🐝 Bees / PollinatorsHIGH
🐟 Fish / Aquatic LifeVERY HIGH
🐦 BirdsLOW
🐕 Mammals / PetsLOW
🦐 Aquatic InvertebratesVERY HIGH
💡 Very toxic to bees on contact. Toxic to fish. Low bird and mammal toxicity.

⏱️ Residual & Re-entry Timeline

🔹
Apply
Follow label mixing and application rates
🔸
Re-entry: 2–4 hours (until dry)
Keep people and pets out of treated area
🟢
Effective period: 60–90 days
Active residual — killing or repelling target pests
🔄
Reapply
Re-treat when pest activity returns or residual expires

❓ Frequently Asked Questions

Q: Is cyfluthrin safe for pets?
Follow the product label. Keep pets out of treated areas until completely dried (2–4 hours for sprays). Once dry, treated surfaces pose minimal risk to dogs and cats.
Q: Can I use cyfluthrin indoors?
Check the specific product label — formulations vary. Baits and dusts often have indoor labeling; concentrates and granulars are typically outdoor.
Q: How long does cyfluthrin last after application?
Residual varies by formulation, surface type, weather, and UV exposure. Indoor applications last longer than outdoor. Check the product label for re-application intervals.
Q: What should I do if exposed?
Remove contaminated clothing, wash skin with soap and water. For eye contact, rinse 15–20 minutes. For ingestion or severe symptoms, call Poison Control (1-800-222-1222). Have the product label available.

📋 Safety Data Sheet (SDS)

📋

Tempo SC Ultra — Safety Data Sheet

View the official SDS document for this product directly on the CDMS label database.

Tempo SC Ultra Safety Data Sheet page 1
📄 Tempo SC Ultra — Safety Data Sheet · View the complete SDS document above or download below
📚 Sources: EPA Pesticide Labels · NPIC Pesticide Info
Published: Jan 1, 2025 · Updated: Apr 7, 2026
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Reviewed by Derek GiordanoContent reviewed by a licensed pest management professional and cross-referenced against EPA, university extension, and manufacturer technical data. Last reviewed: April 2026.