Updated September 25, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Quick answer: If your dog has eaten, licked, or been sprayed with a pesticide, call your vet, an emergency clinic, or a pet poison hotline right away, and have the product label in hand. The active ingredient determines the danger and the treatment. Some rodent baits cause no signs for several days while others cause seizures within an hour. Don’t make your dog vomit or give home remedies unless a vet tells you to.
What to do right now
- Move your dog away from the product and keep other pets away.
- Call for help: your vet or an emergency clinic, or ASPCA Animal Poison Control Center (888) 426-4435 or Pet Poison Helpline (855) 764-7661 (fees apply).
- Bring the package or a photo of the label, including the active ingredient and its percentage.
- Skin or coat exposure: if a vet or the hotline advises it, wear gloves and bathe your dog with liquid dish soap and lukewarm water, then rinse well.
- Don’t induce vomiting unless instructed. With some products, such as gopher bait containing zinc phosphide or petroleum-based liquids, vomiting at home can be dangerous.
- Don’t give milk, salt, oil, or activated charcoal on your own.
Common pesticides and their signs
Rodent baits (rat and mouse poison)
- Anticoagulants (such as brodifacoum or bromadiolone): stop blood from clotting. Signs such as weakness, pale gums, coughing, nosebleeds, or bruising often appear 3–5 days later. There’s an effective antidote (vitamin K1) when treated early.
- Bromethalin: causes brain swelling, with tremors, wobbliness, seizures, or paralysis. No antidote.
- Cholecalciferol (vitamin D3): raises calcium to dangerous levels and damages the kidneys.
- Zinc phosphide (gopher and mole bait): releases toxic gas in the stomach, causing vomiting, bloating, and breathing trouble.
Baits look alike, so the label is essential.
Insecticides
- Organophosphates and carbamates (found in some garden, rose, and farm products): drooling, tearing, vomiting, diarrhea, frequent urination, tremors, tiny pupils, trouble breathing, and seizures.
- Pyrethrins and pyrethroids (many household sprays and dog flea products): dogs usually get mild drooling, twitching, or skin irritation. These products are much more dangerous for cats.
Snail and slug bait (metaldehyde)
Causes anxiety, heavy panting, severe tremors, seizures, and a dangerously high body temperature, often within an hour. This is an emergency.
Weed killers
Many herbicides, such as glyphosate, usually cause stomach upset if a dog licks treated plants after they dry, but concentrated products can cause more serious signs. Call for advice.
How vets treat it
- Decontamination: inducing vomiting in the clinic, activated charcoal, or bathing.
- Antidotes where they exist, such as vitamin K1 for anticoagulant rodent bait and atropine for organophosphate and carbamate poisoning.
- Seizure and tremor control with medication.
- Cooling for high body temperature.
- IV fluids, oxygen, and blood transfusions as needed.
- Follow-up blood tests, such as clotting tests after anticoagulant bait or calcium and kidney values after vitamin D3 bait.
Prevention
- Use tamper-resistant bait stations and place them where pets can’t reach, or consider non-toxic pest control.
- Keep pets off treated lawns and gardens until the product dries or for the time on the label.
- Store garden products in closed cabinets. Dogs chew through bags.
- Tell any pest control company you have pets, and ask which products they use.
- Never use dog flea products on cats.
Frequently asked questions
My dog ate rat poison but seems fine. Can I wait?
No. Anticoagulant baits cause no signs for days, and by then bleeding can be life-threatening. Early treatment is simple and effective.
Is lawn fertilizer dangerous?
Most plain fertilizers cause stomach upset, but products combined with insecticides (such as disulfoton in some rose products) or with iron or bone meal can be more serious. Call with the label.
How long after exposure do signs start?
It ranges from minutes (organophosphates, snail bait) to several days (anticoagulant rodent bait). That’s why the product name matters more than symptoms.
Sources
- Merck Veterinary Manual: Rodenticide poisoning
- Merck Veterinary Manual: Organophosphate and carbamate toxicosis
- Merck Veterinary Manual: Metaldehyde poisoning
- ASPCA Animal Poison Control Center: Insecticides and rodenticides
- Pet Poison Helpline: Rat and mouse poisons
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.