Killer counterfeits: the flea treatments that could send you rushing to the vet

Some cheap fakes contain toxic chemicals that make pets seriously unwell – and leave you with a big bill

You want to save money whenever you can so when you see the usual brand of flea treatment for your cat listed at half the normal price, you click “buy”.

It arrives and you apply it to your pet, but they fall ill and you have to rush to the vet for treatment.