- Cats are streaming in. We don't know what to do to stop it, says veterinarian Cecilia Tegner.

The poison has been around since 2013 but became popular only after another poison, which was more popular, was banned last year.

The reason was that other animals were at risk of injury. Alfachloralos was considered to be safer as it kills faster, and should therefore not risk secondary poisoning, for example, cats.

To definitively diagnose alpha-chloralosis poisoning, toxicological samples need to be analyzed in the United States, and it has not been done. But the veterinarians agree that the evidence is clear.

The cat Sixteen was affected

Cat Sixten in Knivsta was poisoned in early November. His mate Therese Tangen discovered it when he sat motionless in the rain.

- I don't think they should sell this poison to private individuals, she says.

In the clip above, veterinarian Cecilia Tegner talks about the symptoms, and Therese Tangen about how things went with Sixten.