:lol:
i've heard all the methods.
running floss behind them works only when they're new, or else it takes forever and leaves alot of it behind (bug & tar remover, ftw)
ive also heard to use a plastic knife, like the ones without too much serrated ones (the same ones that you get pissed at because they can't cut through your mashed potatoes without alot of effort), or something about wrapping a knife in painters tape or something.
being that your car is still somewhat new, usually you can get like one edge started and just pull, and it will usually leave alot of the gunk left, but that's not a huge problem to take care of.