Animal owners have been urged by a top vet to take care when picking a flea treatment to avoid harming their pets this summer.

The arrival of warm weather always prompts millions of people to purchase preventative products at this time of year. Most of these are safe and effective but not all flea treatments are appropriate for every animal, warns the British Veterinary Association.

BVA is encouraging owners to speak to a vet about different options before treating their pet to ensure they are able to choose the best and safest option available. Products used inappropriately or those intended for other species can seriously harm or even kill an animal.

BVA President and veterinary surgeon Robin Hargreaves said: “As the weather gets warmer many owners will be stepping up their efforts to keep their pets and homes flea and tick free. It’s understandable that people might be tempted to reach for the cheapest option or to use up products that they purchased last year but these can be ineffective or even dangerous to your pet.

“I can easily understand how the wide range of available flea treatment products, of varying efficacy, could be confusing for owners. Dog treatments containing permethrin pose a particular danger if used on cats and can cause serious health problems or even death.

"I’ve seen first-hand the tragic results that can occur and my advice would always be to speak with your vet before making a purchase. They can take into account your individual circumstances and consider factors such as the number and range of animals in your home, your pet’s temperament and their potential exposure to other pests, such as ticks. They will then advise you on the most effective treatment for your pet.”

According to the BVA, spot-on products containing the insecticide permethrin are highly toxic for cats and can have fatal consequences. Owners are advised to seek veterinary advice immediately if they believe their cat may be suffering from permethrin poisoning.