We had a constant reinfestation problem, find the blighters, treat with chemicals, nit comb, and tea tree, go back to school, and three day's later start all over again, then a friend suggested the following and touch wood its worked so far.
My daughter is always the source of the problem with longer hair, they dont jump, but actually crawl from on head to another. Girls being girls, they huddle and the long hair is a fantastic super highway for the nits.
By always plating her hair it reduced the reinfestation, and using leave in conditioner (tee tree if I can find it) it made the hair too slippery for the nit to get a grip on, so at least it couldn't adhere any eggs.
Iv been doing this for a year now, and so far (franticly looking for wood to touch) we havnt had a problem since.
Hope this helps
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