Trimmers, once every few days. Takes a minute and it's done. I'd be there all fucking day if I was plucking; it's like a jungle in there.
I hate to tell you youngsters this, but it gets a whole lot worse before it gets better. Think moustache-levels of growth coming out of your nostrils.
And when I say it gets better, I mean that you'll eventually die. Then it stops altogether.