Suspect poisoning? US: ASPCA Poison Control (888) 426-4435 · UK: 01202 509 000 · Severe symptoms → nearest emergency vet now.

My 4 kg cat walked across a floor mopped with ammonia cleaner, not bleach — is the risk the same?

Cats · Emergency guide

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

No, the risk is different and ammonia is still an emergency. Ammonia is a corrosive alkali that burns the mouth and stomach lining on contact, whereas bleach is a different corrosive. The immediate danger for your cat is from licking the chemical off her paws — you'll see drooling and pawing at the mouth within minutes. Never mix the two; ammonia and bleach together create deadly chlorine gas. Check her paws and mouth for redness, wipe her paws with a damp cloth, and call the ASPCA poison line at 888-426-4435 or your vet right away.

Why Ammonia Cleaners Are a Household Hazard

Ammonia is a strong alkaline corrosive found in many window, floor, and bathroom cleaners across the US and UK.

Ingestion causes immediate burning of the mouth, esophagus, and stomach lining, and inhalation of fumes can damage the respiratory tract.

Cats are especially at risk because they may walk on freshly mopped floors and then groom themselves, transferring the chemical to their mouths.

Never mix ammonia-containing products with bleach, as this releases toxic chlorine gas that is fatal to pets.

Why speed matters

Delaying care significantly worsens outcomes. Some signs appear hours or days later, so "looks fine right now" is not a reason to wait.

Signs to watch for

  • Excessive drooling and pawing at the mouth
  • Vomiting, sometimes with blood
  • Difficulty breathing or wheezing
  • Red, irritated, or burned-looking oral tissues
  • Coughing and nasal discharge
  • Weakness and collapse in severe cases

What to do right now

  1. Call your veterinarian or a pet poison helpline right away for guidance.
  2. Do not induce vomiting, as this re-exposes the esophagus to the corrosive chemical.
  3. Rinse the pet mouth gently with cool water if they are conscious and able to tolerate it.
  4. Wipe any residue from the fur with a damp cloth to prevent further licking.
  5. Keep the pet calm and transport to a veterinary clinic if breathing difficulties develop.
If your pet shows any of the signs above, go to the nearest emergency vet now and call ahead.

The step-by-step response, from the first minute to the vet visit, is in our Ammonia Cleaner Poisoning in Dogs and Cats emergency guide.

Open the full emergency guide: Ammonia Cleaner Poisoning in Dogs and Cats →