Cats flea spot on treatment

[JustJenni]

I've flea'd my 2 cats with frontline spot on since i've had them and all of a sudden my younger one seems to become immune to it, she still got running flea's on her, and i can only think shes passing them onto the other cat and our dog.
We live near a very wooded area and i thought she might be picking them up from there but everytime i brush her i get a varity of small and large flea's. I've spayed all the carpets, aswell as the beds and washed all there blankets and such. Im at a loss as what to do?
I'm thinking its time to try and different flea treatment?
Has anyone else had a problem like this?

[ray_the_dj]

Visit your vet and ask them for the best remedy.

[ladybirder]

JJ Front Line doesn't work anymore. Cat's and dogs have become immune to it. If you google the question you will see hundreds of people are complaining about it. I am now using Advocate which you can only get from the vet. Its for cats and dogs. And it works.

[JustJenni]

I've got an appointment with the vet tomorrow so hopefully, the flea's will be good and dead soon

[pastafreak]

You can get a prescription from your vet-then order online...it will be a good deal cheaper.

[ladybirder]

Not from my vet it won't - he charges £8.50 an item.

[ladybirder]

I meant for the prescription.

[boxtops]

We're using Advocate on the cats - I preferred Stronghold but our vet stopped providing it. Advocate deals with worms as well - still spot on but effective, it seems.