My cat ate fertilizer – what should I do?

Updated 2026-09-30 · 1 sources

Based on: Pet Poison Helpline

Call a vet today

Call your vet today for advice – don't wait until signs appear. Some fertilizer ingredients may be toxic in large concentrations.

What to do right now

  1. Call your vet or the nearest emergency vet.
  2. Note what was eaten, how much and when.
  3. Bring the packaging.
  4. Remove what is left and keep your cat calm.

Don't

  • Do not make your cat vomit unless a vet tells you to.
  • Do not give any human medicine.

Why it can be dangerous

Most fertilizers contain varying amounts of nitrogen, phosphorus and potassium (potash), shown by three numbers on the packaging.[1] Some fertilizers may also contain iron, copper, zinc, cobalt, boron, manganese and molybdenum, and some of these may be toxic in large concentrations.[1]

Signs to watch for

  • Vomiting
  • Diarrhea
  • Drooling
  • Abdominal pain
  • Difficulty breathing
  • Nausea
  • Abnormal posture due to abdominal pain
  • Muddy-colored gums

Signs may have acute or delayed onset.

If your pet is struggling to breathe, has collapsed, is having a seizure or can't stand up: go to the nearest vet now.

Not sure how serious it is?

OkPaw asks a few quick questions about your pet and tells you in 30 seconds whether it can wait. Free on Google Play for Android.

Get it on Google Play

OkPaw is on Android now – an iPhone version is on its way.

Common questions

How much fertilizer is dangerous?

Some fertilizer ingredients may be toxic in large concentrations.[1]

Why can fertilizer be dangerous?

Some fertilizers may contain iron, copper, zinc, cobalt, boron, manganese and molybdenum, and some of these may be toxic in large concentrations.[1]

What do the three numbers on the packaging mean?

The three numbers indicate varying amounts of nitrogen, phosphorus and potassium (potash).[1]

Sources

  1. Pet Poison Helpline

How this page was made: written with the help of AI from the sources below, then checked claim by claim against those sources. Urgency levels follow OkPaw’s fixed safety rules. It is guidance, not a diagnosis. How we write our pages

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