It is important to differentiate lice
and nits; nits are the empty egg cases attached to the hair shafts and contain no live lice if seen more than 1/8 inch from the scalp.
These can be removed by soaking the hair in vinegar and combing with a fine-tooth comb. Actual lice can be killed by many of the otc and prescription pediculocides available. Read the directions on the label!