Aargh!! I never had nits growing up so this is all new to me. My dd (3) was scratching her head this morning so I had a look in her hair and saw a few white bits. I thought I'd better treat them to be on the safe side and absolutely loads of lice came out when I was combing her hair. I feel terrible. I found one on her pillow too 
So I treated dd and ds with Lyclear and used the comb afterwards. Then put a tea-tree leave in conditioner in afterwards and put dd's hair in tight plaits. I could still see some white spots in her hair though, so I guess I just need to keep combing until they're gone?
I've washed all our bedding at 90 degrees and I've just treated myself (found one in my hair).
What else do I need to do? Will we get on top of them??
I've been dreading the day my two get nits because (a) I'm rubbish with things like this and (b) they've got the most beautiful curly hair so lots of places to hide!