Stupid wool care question

ejgballerina

When my longies get pills on them, is it okay to pull them off by hand?  I know this is probably the stupidest question in the world, but I didn't know if that somehow damages the wool after time.  I don't have a sweater shaver or anything and wasn't sure if it was an absolute necessity when using wool, kind of like how a diaper sprayer isn't a true necessity when CDing (well, at least to me).  Just wanted to make sure there wasn't a "correct" way to get rid of pill.  Thanks!