Antifreeze can be fatal to cats, and suspected exposure needs immediate veterinary advice even before obvious signs appear. Prevention means secure storage, prompt spill control and checking areas around vehicles.
Know where exposure can occur
Coolant can leak beneath a vehicle or spill while topping up a system. Similar chemicals may be present in some de-icers or water features. Keep cats out of garages and work areas while products are used.
Store and dispose securely
Cats Protection identifies antifreeze as a serious cat hazard. Keep containers upright in a locked cupboard, retain the label and dispose of products through the appropriate local route. Never decant them into drinks bottles.
Treat a spill as urgent
Keep cats away, absorb the liquid while wearing suitable protection and clean according to the product instructions. Do not hose a spill into an area animals can access. Check tyres, paws and nearby surfaces before reopening the space.
Call rather than waiting
If a cat may have licked a spill or walked through it and groomed, call a vet immediately. Take the container or a clear photograph of the label if safe. Do not offer a home remedy or wait for symptoms.
Sources and further reading
Guidance checked 13 September 2026.
