At Lice Be Gone we usually find that more than one person in a ftamily has head lice. There are times that a whole family has head lice. his is because head lice are very contagious. If a child is allowed to attend school with nits, that child should be considered to have lice. There is no way to determine when a nit will hatch which would set up a situation where a bug could transfer to another child. It doesn't matter if chemical treatments, or heat treatments have been used in an attempt to have that child lice free. As long as someone has nits, they should be considered to have an active case of head lice. Parents that spend the time and money to have their child and family nit and lice free are understandably upset at the lack of having a "no nit policy".