We normally treat DCat with Bravecto flea treatment on the back of the neck once every three months. He's an outdoor cat.
We've done it for years and never really questioned it, I presume the vet recommended it?
I've recently listened to the BBC podcast "Toxic!" about forever chemicals, and it talks about how these kind of flea treatments are very damaging to the environment and are hugely overused. It suggests you only need to be using flea treatment if your cat actually has fleas - otherwise you should stop the regular applications when the cat does not have fleas.
Has anyone else stopped regular flea treatment for this reason? Do cats really need continuous flea treatment for their whole lives?
What about similar worming treatment? I presume that is more important to do regularly for an outdoor cat?