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

My cat walked through ice melt an hour ago and is now licking her paws — when would poisoning signs start?

Cats · Emergency guide

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

Short answer

Signs can begin within a few hours. The first thing you might see is irritation from the chemical itself: limping, excessive paw licking, or red, cracked pads. If she ingests enough by grooming, symptoms of salt poisoning like vomiting, extreme thirst, diarrhea, or wobbliness can develop within 1 to 6 hours. This is an urgent situation. Rinse her paws thoroughly with warm water now to remove residue, dry them well, and prevent further licking. If you see any of those systemic signs, contact your vet or the ASPCA Animal Poison Control Center at 888-426-4435 immediately.

Why is this dangerous?

Ice melt is mostly sodium chloride or calcium chloride. It is caustic to paw pads and, because pets groom their feet, a meaningful amount ends up swallowed — leading to hypernatraemia (salt poisoning): brain cells shrink and neurological signs follow.

Calcium chloride is also exothermic — it releases heat on contact with moisture, so it can cause chemical burns even without prolonged contact.

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

  • Burned, cracked or bleeding paw pads, limping
  • Drooling, vomiting, diarrhoea
  • Extreme thirst and urination
  • Wobbliness, disorientation, head pressing
  • Tremors, seizures, coma in severe salt poisoning

What to do right now

  1. Rinse the paws with warm water as soon as you get home, and dry them — do not let the pet lick them first.
  2. Call your vet if the pet is wobbly, vomiting or very thirsty; salt poisoning needs controlled rehydration, not free access to water.
  3. Do not let the pet drink large amounts quickly — that can worsen brain swelling.
  4. Use pet-safe ice melt and booties on winter walks.
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 De-Icing Salt & Ice Melt emergency guide.

Open the full emergency guide: De-Icing Salt & Ice Melt →