Back to Front Line:
And if someone tells me today that Frontline help against ticks, then I can only assume that the cat in question does not come into contact with ticks and that's what gets no. My impression was that Frontline has never protected from ticks, at best, the ticks died after they had bitten. (I had, when I was treated with Frontline, repeatedly can tick that remained dry hanging in the bite wound to remove.)
We have the largest tick infestation ever exactly this time of year: April to May.
Right now in the spring I remove ticks almost every day of my two cats. Despite Spot On (which I was but definitely recommended against fleas!) And flea and tick collar! (Bolfo).
Why this is so that this Frontline no longer works, I can not say, but I'm sure it has sometimes helped because the flea problem I have with it had quite a long period under control, but last year was It then made with the effect ...