i don't use a trimmer, just the baby blade on the back of my razor. i kinda stretch my nostrils to expose as much of the offending growth as possible and sweep/hack gently. once i untangled one that, properly elongated, reached my lower lip.
if i get ear hair in the next 7 years i'm just gonna give up on life, marry the ex who's still obsessed with me and just drink a lot in oklahoma and play with model trains or some shit.