Misinformation can delay a useful check or lead to unsafe treatment. Here are seven important facts.
Common myths and the facts
- “Lice jump or fly.” They crawl and spread most often through direct head-to-head contact.
- “Lice mean someone is unclean.” Anyone can get head lice; it is not a sign of poor hygiene.
- “The family must shave the child’s head.” Hair removal is not a required head-lice treatment.
- “Household insecticide, kerosene or bleach will work.” Never put these dangerous, non-medical chemicals on a person’s skin or hair.
- “Pets spread human head lice.” Human head lice live on people; follow veterinary advice for pet parasites.
- “Every product needs a second dose on the same day.” Products differ. Follow the specific label and ask a pharmacist before retreating.
- “A child must always be sent home until every nit is gone.” Follow the current school and local public-health policy. Avoid stigma and ask the school nurse or healthcare professional for guidance.
The CDC’s treatment guidance explains how to use lice medicines safely. See our label-first use guide for product-specific reminders.
This is general educational information, not a diagnosis. Follow the current product label and ask a healthcare professional if you are unsure.
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Questions about this topic
Can head lice jump or fly?
No. Head lice crawl; they do not jump or fly.
Does a head-lice case mean poor hygiene?
No. Anyone can get head lice.
Can household insect spray treat head lice?
No. Do not use fumigant sprays or chemicals that are not intended for use on people.