Biflex contains bifenthrin, a pyrethroid insecticide. Cat’s are particularly sensitive to pyrethroids and even small ingestions can result in excessive salivation, body tremors and even convulsions.

We recommended that the Biflex residue be rinsed off Tinky’s paws with a mild soap and water and that she be taken to a veterinarian immediately. Tinky developed facial and then general body tremor at the veterinarian practice 3 hours later. Unfortunately, she then had a generalised convulsion which lasted less than 1 minute.

The veterinarian consulted the Animal Poisons Centre. As Tinky was showing clear signs of pyrethroid poisoning, it was recommended that Tinky be treated with some medication to prevent further convulsions, be admitted for a minimum of 24 hours and otherwise managed supportively. Tinky was without symptoms 2 days later and was sent home.

Heading into the warmer months, this is a timely reminder to cat owners to be cautious with pyrethroid insecticides. Cats can become poisoned from exposure to very small amounts. Pyrethroids are commonly found in domestic insecticides such as fly sprays and outdoor granular and spray products. If you have a cat and are considering using these, ensure they are kept away from the area until it has been well ventilated and the surfaces are thoroughly dry.