πŸ§ͺ Active Ingredient Profile

Chlorfenapyr (Phantom) Insecticide Profile

Pyrrole (Halogenated Pyrrole)

Chlorfenapyr's completely different mode of action makes it critical for treating pyrethroid-resistant pest populations. Phantom spray is the most widely used professional product for resistant bed bugs and cockroaches.

πŸ§ͺ
CAS Number
122453-73-0
Mode of Action
Disrupts mitochondrial ATP synthesis β€” completely different mode of action from pyrethroids, no cross-resistance
βš–οΈ Educational use only. Always read and follow the full product label β€” the label is the law under FIFRA. Full disclaimer β†’ | βš—οΈ Mixing Calculator β†’

πŸ“‹ Key Facts at a Glance

Chemical Class
Halogenated Pyrrole
Signal Word
Caution to Warning
Key Products
Phantom (professional concentrate), Temprid SC (chlorfenapyr + beta-cyfluthrin combo)
Residual Duration
30-90 days
Resistance
No cross-resistance with pyrethroids β€” effective on resistant populations
Delayed Action
24-48 hours to kill β€” important for transfer to nestmates
Application
Non-repellent when dry β€” pests don't avoid treated areas

🎯 Primary Uses in Pest Control

Chlorfenapyr (Phantom) is used primarily for: pyrethroid-resistant bed bug treatment, German cockroach control where pyrethroid resistance is confirmed, and as a rotation product to slow resistance development in other pest programs. Temprid SC combines chlorfenapyr with beta-cyfluthrin for broader spectrum control.

πŸ›‘οΈ Safety Summary

Moderate mammalian toxicity β€” higher than pyrethroids at equivalent concentrations. Follow label PPE requirements carefully. Avoid direct skin contact with concentrate. Well-tolerated at dried residue levels from labeled applications. Not recommended for use around pets until surface is dry.

πŸ”¬ Resistance Status

Chlorfenapyr's unique mode of action means no cross-resistance with pyrethroid-resistant populations β€” it's equally effective on both resistant and susceptible bed bugs and cockroaches. This is its primary competitive advantage over pyrethroids in structural pest control.

🏷️ Common Products Containing Chlorfenapyr

Phantom (BASF)Temprid SCTemprid Ready-Spray

🦺 Personal Protective Equipment (PPE)

Required PPE varies by formulation and application method. Always read the product label β€” the label is the law and overrides general guidance.

⚠️ Label compliance: The product label is a legal document under FIFRA. Applying any pesticide in a manner inconsistent with its label is a federal violation.

πŸ“‹ Application Best Practices

πŸ’‘ Storage: Store in original container, away from children, in a cool dry location. Never transfer to food or beverage containers. Check local regulations for disposal β€” most areas have household hazardous waste collection events.
Example
0.5 oz
per gallon
βš—οΈ Mixing Calculator
Enter your sprayer size and target rate β€” get the exact amount to pour. Backpack, hand sprayer, hose-end, or skid unit.
Open Calculator β†’

🌿 Environmental & Resistance Considerations

Responsible pesticide use protects both effectiveness and the environment:

πŸ› Pests This Treats β€” Learn More

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

πŸ› Ants β†’ πŸ› Bed Bug β†’ πŸ› Cockroaches β†’ πŸ› Scales β†’ πŸ› Ticks β†’

🌿 Environmental & Ecological Impact

🐝 Bees / PollinatorsHIGH
🐟 Fish / Aquatic LifeMODERATE
🐦 BirdsLOW
πŸ• Mammals / PetsMODERATE
🦐 Aquatic InvertebratesHIGH
πŸ’‘ Pro-insecticide activated inside the insect. Moderate environmental persistence. Important bed bug resistance tool.

⏱️ Residual & Re-entry Timeline

πŸ”Ή
Apply
Follow label mixing and application rates
πŸ”Έ
Re-entry: 4 hours
Keep people and pets out of treated area
🟒
Effective period: 14–21 days
Active residual β€” killing or repelling target pests
πŸ”„
Reapply
Re-treat when pest activity returns or residual expires

πŸ”„ Alternatives & Related Products

Same chemical class or different approaches to the same pests.

↔️
Pyrethrin
Different approach: Botanical Pyrethrin
↔️
Boric Acid
Different approach: Inorganic

❓ Frequently Asked Questions

Q: Is chlorfenapyr 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 chlorfenapyr indoors?
Check the specific product label β€” formulations vary. Baits and dusts often have indoor labeling; concentrates and granulars are typically outdoor.
Q: How long does chlorfenapyr 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.

πŸ“‹ Safety Data Sheet (SDS)

πŸ“‹

Chlorfenapyr (Phantom) β€” Safety Data Sheet

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

Chlorfenapyr (Phantom) Safety Data Sheet page 1
πŸ“„ Chlorfenapyr (Phantom) β€” Safety Data Sheet Β· View the complete SDS document above or download below
πŸ“š Sources: EPA Pesticide Labels Β· NPIC Pesticide Info
Published: Jan 1, 2025 Β· Updated: Apr 7, 2026
🔮
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.