I've had over 40 and not really bit yet, although struck at a few times. I think one bumped me on the back of the head but I don't count that.

Funny story, had one around my neck while at the desk. 6yo son comes up and I feel her tense up (she's on the nervous side). I said, Caleb back up she's going to bite you (without looking). He didn't move and 10 seconds later I felt her jerk and that's exactly what happened. He cried a little but didn't even break the skin and was fine in no time.

I named her "Snapples".