Discovered nits in my DS1 yesterday. Went to boots got the mousse etc. I combed through this morning and didnt find any nits but picked out a few eggs clinging to the hairs - are they dead or waiting to hatch as i used treatment yesterday???? Do i have to keep him off school till all clear??? What is considered all clear??? Checked DS2 definately no nits. Do i still treat him??? Have treated myself. Help