Why is it that some schools have lice infestation and some don't?
When lice treatment is left solely to the school nurse it is impossible for her to check everyone for lice at the same time. At best she will check a few children daily. At that rate, children who were checked go back into a lice infested environment.
Licenders can come down with many nitpickers at once that can get rid of lice in the whole school in a few hours.
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