Is Permethrin Toxic to Pets?
Yes — permethrin is toxic to cats. Yes — permethrin is mildly toxic to dogs.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
- Toxic compound
- Permethrin
- Toxic parts
- Dog flea and tick spot-ons, sprays
- Also known as
- flea treatment, dog flea medicine
Symptoms
Cats (toxic)
- Vomiting
- Diarrhea
- Drooling
- Reduced appetite
Dogs (mildly toxic)
- Usually safe when used as labeled on dogs
- Skin irritation or drooling if licked
What to do
If your cat ate permethrin
- Call your vet or a pet poison control line immediately — don't wait for symptoms.
- Do not induce vomiting unless a vet tells you to.
- Bring the plant, label or packaging with you so the vet knows exactly what your cat ate.
- Note roughly how much was eaten and when.
If your dog ate permethrin
- Remove any plant material from your dog's mouth and keep it out of reach.
- Gently rinse the mouth and offer fresh water.
- Call your vet if symptoms persist, get worse, or your dog is small, young or elderly.
Good to know
Dog flea products containing permethrin are extremely toxic to cats, causing tremors and seizures. Never use dog-only products on cats.
Is your pet covered for emergency vet bills?
Compare pet insurance quotes →
Frequently asked questions
Is permethrin toxic to cats?
Yes — permethrin is toxic to cats. Common signs include vomiting, diarrhea, drooling.
Is permethrin toxic to dogs?
Yes — permethrin is mildly toxic to dogs. Common signs include usually safe when used as labeled on dogs, skin irritation or drooling if licked.
Which parts of permethrin are toxic?
Dog flea and tick spot-ons, sprays.
What makes permethrin toxic?
Permethrin.