I too have given up with frontline years back as it doesn't seem to work anymore. I wouldn't waste time with it. Advocate is the one to use.
As others have said this doesn't seem to work any more, gets terrible reviews too. I went for 'advantage' instead on my cats and dogs. It's cheaper, comes in packs of 4 pipettes and works. I got mine from Animed https://www.animeddirect.co.uk/catalog/product/view/id/9778
Doesn’t work anymore on my cat so switched to advantage, same ingredients as avodate from the vets. Good offer though
Might as well put water on your cat than frontline. Same result.
Same, Frontline just made the fleas docile, not killing them. Was using Advocate which works, but crazy expensive as you need a vet prescription. Also trying Advantage atm, seems to be working so far.