Effective head-lice control includes specific measures against the egg stage (nit) as well as against the adult and nymphal stages. Just a few undetected nits, adults, or nymphs can result in a full-blown infestation of head lice. Nit-picking (egg removal) can be done either before or after use of an insecticidal or non-insecticidal treatment, which primarily kills head-lice adults and nymphs.
Extermination of Nits on Hair
Nit-picker is a term associated with head-lice infestations. In fact, nit-picking is essential to head-lice eradication on the person, because nits are firmly attached or cemented to hair strands and are quite difficult to remove. Nits also tend to be more difficult to kill than adults or nymphs. The nervous system, which typically is the target of insecticide treatments, is incompletely developed during the egg stage of the head louse.