Is Permethrin Yard & Bug Sprays Safe for Dogs?
Why it’s a problem
Permethrin attacks nerve cells, and a dog licking treated grass or his own coat can ingest enough to cause tremors. Wet sprays are far more hazardous than dried ones. Dogs tolerate permethrin far better than cats, which is why dog products can use it at all.
How to keep your pet safe
Keep your dog indoors or off the treated yard until the spray has fully dried, and water in granules as the label directs. Never spray near food bowls or toys, and store concentrates on a high shelf. Do not apply lawn and yard products directly onto your dog.
Warning signs to watch for
Drooling, lip smacking, vomiting, skin twitching, muscle tremors, uncoordinated gait, panting, restlessness; severe cases show seizures.
When to call the vet
Bathe your dog with mild dish soap if the product got on the coat, and call your vet or a pet poison hotline with the label in hand. Do not induce vomiting unless instructed. Tremors mean your dog needs to be seen quickly.
Common questions
My dog licked the lawn right after it was sprayed — what now?
Rinse his mouth with water if he will allow it, and call your vet or a pet poison hotline. Watch closely for drooling, tremors or vomiting over the next few hours.
Can I use permethrin yard spray if I have a dog?
Yes, if you keep the dog off the area until it is completely dry and follow the label exactly. The main rule is that wet spray means danger, while dry residue is usually tolerable.
My dog is fine but my cat lives with us — any risk?
Yes — cats can be poisoned just by grooming a permethrin-treated dog or walking on treated grass. Keep the cat away from treated areas until fully dry and consider a non-permethrin product.
More household hazards for dogs
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate or touched something concerning, contact your veterinarian or a pet poison hotline right away. In the US: Pet Poison Helpline (855) 764-7661, ASPCA Animal Poison Control (888) 426-4435 (fees may apply).