Clawmate
Get Started
🐛
🐕
LETHAL to cats — safe for dogs but NEVER cats

Is Permethrin (Flea Treatment) Toxic to Dogs?

Permethrin is a common ingredient in DOG flea treatments that is extremely toxic to cats. It is the #1 cause of feline poisoning from flea products. Even residue from a treated dog can poison a cat that grooms it.

Quick Answer

Yes, permethrin (flea treatment) is toxic to dogs. LETHAL to cats — safe for dogs but NEVER cats. Permethrin is a common ingredient in DOG flea treatments that is extremely toxic to cats. It is the #1 cause of feline poisoning from flea products. Even residue from a treated dog can poison a cat that grooms it. Watch for symptoms like muscle tremors and twitching and seizures.

Emergency

If your dog was exposed, contact your vet or ASPCA Poison Control (888) 426-4435 immediately.

🐕 Specifically for Dogs

Permethrin is safe for dogs and is a common active ingredient in flea and tick treatments. Follow label directions.

Symptoms to Watch For

  • Muscle tremors and twitching
  • Seizures
  • Hypersalivation
  • Difficulty breathing
  • Death without treatment

Timeline

Symptoms typically appear within 1-12 hours of exposure.

Treatment

  • EMERGENCY VET immediately for cats
  • Wash off any product with warm water and dish soap
  • Anti-seizure medication
  • IV fluids and supportive care
  • Muscle relaxants (methocarbamol)

Prevention

  • NEVER use dog flea products on cats
  • Check ALL flea product labels for permethrin
  • Separate treated dogs from cats until product is dry
  • Use only cat-specific flea treatments

Other Toxins Dangerous to Dogs

🌸 Lilies🌴 Sago Palm🌷 Tulips🌺 Azaleas & Rhododendrons🌿 Oleander🪴 Aloe Vera🎄 Poinsettia🪴 Dieffenbachia (Dumb Cane)🌿 Pothos (Devil's Ivy)🪴 Snake Plant (Sansevieria)🧪 Antifreeze (Ethylene Glycol)🐀 Rat & Mouse Poison (Rodenticides)🧴 Bleach & Household Cleaners🐛 Permethrin (Flea Treatment)💊 Ibuprofen (Advil, Motrin)💊 Acetaminophen (Tylenol)💊 Antidepressants (SSRIs, SNRIs)🫧 Tea Tree Oil (Melaleuca)🫧 Essential Oils (General)🫧 Eucalyptus Oil🧺 Laundry Detergent Pods🔋 Batteries🪙 Pennies & Zinc Objects🍳 Teflon / Non-Stick Cookware Fumes🐌 Slug & Snail Bait (Metaldehyde)🌱 Lawn Fertilizer🍃 Marijuana / Cannabis / THC⚪ Mothballs🍇 Grapes, Raisins & Currants
🐱 Cats version →🐰 Rabbits version →🐦 Birds version →🐹 Hamsters version →

Frequently Asked Questions

Is permethrin (flea treatment) toxic to dogs?▼
LETHAL to cats — safe for dogs but NEVER cats. Permethrin is a common ingredient in DOG flea treatments that is extremely toxic to cats. It is the #1 cause of feline poisoning from flea products. Even residue from a treated dog can poison a cat that grooms it.
What happens if my dog is exposed to permethrin (flea treatment)?▼
Symptoms include: Muscle tremors and twitching; Seizures; Hypersalivation. Symptoms typically appear within 1-12 hours of exposure.
What should I do if my dog ingested permethrin (flea treatment)?▼
EMERGENCY VET immediately for cats. Wash off any product with warm water and dish soap. Anti-seizure medication.
How can I protect my dog from permethrin (flea treatment)?▼
NEVER use dog flea products on cats. Check ALL flea product labels for permethrin. Separate treated dogs from cats until product is dry. Use only cat-specific flea treatments.

Related Pet Safety Topics

🩺 Dogs Symptom Checker🍎 Safe & Toxic Foods for Dogs🚨 Pet First Aid Guide🐾 Dogs Behavior Guide

This is for informational purposes only. In any poisoning emergency, contact your veterinarian or ASPCA Animal Poison Control (888-426-4435) immediately.