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Is Herbicide Toxic to Cats? Safety Verdict and What to Do

PawAI Lab
4 min read

Learn whether herbicide poses a toxicity risk to cats, what signs may appear after exposure, and what immediate steps to take if your cat may have been exposed.

Quick Answer

Yes, herbicide is potentially harmful to cats. Cats may be exposed by walking on treated lawns and grooming their paws. Keep cats away from treated areas until the product has dried completely. If your cat may have been exposed, contact a veterinarian or animal poison-control service right away, even if no signs are visible yet.

Before using any tool, contact a veterinary professional if your cat may have been exposed.

  • US: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • UK: Animal PoisonLine (01202 509000) or your nearest veterinary emergency clinic
  • Canada: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • AU: Animal Emergency Centre or your regular vet
  • EU: Contact your nearest veterinary emergency service

TOXICITY CHECKER

Check whether a substance may be harmful to your pet and get prioritized safety steps.

Check Toxicity

This tool provides general safety information and does not replace veterinary advice in an emergency.

Safety Verdict

Potentially Harmful. Glyphosate is generally less toxic than many other garden chemicals but can cause gastrointestinal irritation. The surfactants in some formulations may be more toxic than the glyphosate itself.

Cats may be exposed by walking on treated lawns and grooming their paws. Keep cats away from treated areas until the product has dried completely.

What It Is

Herbicides contain compounds designed to kill plants. Glyphosate-based products are generally less toxic than many other garden chemicals but can cause gastrointestinal upset in cats.

Why It May Be Harmful

The toxic principle in herbicide is glyphosate (herbicide). Glyphosate is generally less toxic than many other garden chemicals but can cause gastrointestinal irritation. The surfactants in some formulations may be more toxic than the glyphosate itself.

Signs of toxicity may include:

  • Vomiting
  • Diarrhea
  • Drooling
  • Lethargy
  • Loss of appetite
  • Abdominal discomfort

Timeline: Signs typically develop within a few hours.

Usually mild to moderate. Severe cases are uncommon.

What to Do If Your Cat Eats It

  1. Contact a veterinarian or animal poison-control service for guidance.
  2. Remove any remaining substance from your cat's reach.
  3. Offer fresh water if your cat is willing to drink.
  4. Monitor for signs and contact a veterinarian if they develop or worsen.

Information to have ready when you call:

  • Your cat's age, approximate weight, and any health conditions
  • The name or type of herbicide and the estimated amount consumed
  • When the exposure likely occurred
  • Any current symptoms your cat is showing
  • The product packaging or a photo of the plant if applicable

If only a small amount was consumed and your cat shows mild signs, monitoring may be appropriate after consulting a veterinarian.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service immediately if your cat may have been exposed to herbicide. Do not wait for symptoms to develop.

Emergency signs that require urgent veterinary attention:

  • Persistent vomiting
  • Signs of dehydration
  • Lethargy or collapse
  • Difficulty breathing

Non-urgent follow-up: If only a small amount was consumed and your cat shows mild signs, monitoring may be appropriate after consulting a veterinarian.

FAQ

Are weed killers dangerous for cats?

Glyphosate-based herbicides are generally less toxic than many other garden chemicals, but can cause GI upset. The surfactants in some formulations may increase toxicity. Keep cats away from treated areas until dry.

How long after spraying is it safe for cats?

Follow the product label instructions. Generally, keep cats away until the treated area has dried completely. This may take several hours depending on conditions.

How is herbicide poisoning treated?

Treatment is primarily supportive including IV fluids, anti-emetics, and monitoring. Most cats recover fully with appropriate care.

TOXICITY CHECKER

Concerned about another plant, food, medication, or household item around your cat? Get general, species-aware safety information to help you decide your next step.

Try Toxicity Checker

This tool provides general safety information and does not replace veterinary advice.

Sources

Disclaimer

This article and the PawAI Toxicity Checker tool provide general safety information and do not replace examination, diagnosis, or treatment by a licensed veterinarian. If your cat may have ingested a toxic substance, contact a veterinarian, emergency clinic, or animal poison control immediately.

Written by PawAI Lab