This is an old thread, but thought I would add to it anyway.

Since this is the first full flea and tick season that I have had Wolfy, I was at odds on what to use. When we were in NC for the end part of the season last year - Oct-Nov-Dec - the fleas were vicious and even Advantix II didn't work. When we came back to DE in Jan, I didn't need anything because of the brutally cold winter that we had, but I needed to decide what to use when Spring rolled around. I really wanted to get away from the topicals, and read up on the Seresto collar and decided to try that since it got good positive reviews. So far - so good - no sign of fleas or ticks - and I don't have to remember to apply anything to his skin every month. The collar is good for up to 8 months - just put it on and forget it.