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head lice

head lice facts

  • Nits (the eggs of the head louse) are small yellowish-white, oval-shaped eggs that are “to the side of a hair shaft glued” at an angle
  • Nits must be laid by live lice. You cannot “catch nits.”
  • A female louse lays 3-5 eggs a day. Once laid, it takes 7-10 days for a nit to hatch, and another 7-10 days for the female to mature and begin laying her own eggs.
  • Head lice are clear in color when hatched, then quickly develop a reddish-brown color after feeding.
  • Head lice are about the size of sesame seeds.
  • Head lice have six legs equipped with claws to grasp the hair.
  • Head lice are crawling insects. They cannot hop, jump, or fly.
  • Head lice do not thrive on pets.
  • Head lice are small, wingless insects which feed on human blood. They need human blood in order to survive.
Life Cycle of Lice - Waldwick, NJ - Lice Be Gone
  • Head lice live for approximately 30 days on a host and a female louse may lay up to 100 nits (eggs).
  • Head lice off of their human hosts will starve. The NPA suggests that, in most cases, a head louse will not survive for more than 24 hours off of its human host.

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