I use Profender for worms. It's a spot on vet treatment.
For fleas I'm using Stronghold, also a vet treatment.
I would recommend to anyone one that is using Frontline Combo from the vet to consider switching to something else.
I was using this religiously for years and then in October my cat got fleas and we had a house infestation.
It was awful, horrible, miserable. I spent weeks hoovering, spraying, moving all the furniture and doing laundry. I had to spray myself with mossie repellant as i was eaten alive; trousers tucked into socks, you get the picture.
Our vet said that lots of people were experiencing the same and they speculated that fleas were becoming resistant to it. Our vet no longer recommends Frontline Combo.
I'm considering switching up the flea treatments so say 3 months on Stronghold, then 3 months on Advantage and so on.
Also, there is an injection you can get from the vet that renders the fleas sterile. I think i may get this for our cat when he gets his annual jabs.