PK-B08 · Biting pests

How to get rid of Head lice

Pediculus humanus capitis

Also called: head lice

Head lice live on human heads and glue nits to hair. CDC and AAP treat them as a nuisance, not a disease emergency, and not a reason to spray a house or keep a child out of school for long periods under newer guidance — follow your current school nurse and pediatrician. This is not a structural pest. Do not apply yard insecticide to a scalp. Wet combing and labeled pediculicides as a clinician or pharmacist directs are the methods. Pets do not host human head lice. Foggers for lice are how bedrooms get poisoned.

Head louse (Pediculus humanus capitis) — identification photo
Identification photo of Head louse (Pediculus humanus capitis). Use this with the notes below — size, color, and markings matter more than a single photo, and look-alikes are listed in the sidebar.

How to identify Head louse

  • Nits glued on hair shafts near the scalp, not dandruff (dandruff slides).
  • Live lice on the scalp, small, tan, wingless.

Signs of an infestation

  • Itching scalp, live lice on a comb, nits behind ears and nape.

Biology and why they show up

They spread mainly by head-to-head contact. They do not survive long off a person. Hats are a minor story compared with contact.

Health and property risk

Itching and secondary scratch infection. Social stigma. Pesticide misuse on children is the serious household risk.

Proven control sequence

Work in this order. Skipping inspection or exclusion is why most “treatments” bounce back in a week.

  1. See current pediatric guidance. Wet combing, labeled treatments, repeat timing for eggs. Resistance exists to some products — clinicians know local patterns.
  2. Wash recently used hats and bedding in hot water if fabric allows. Ordinary laundry, not a structural fumigation.
  3. Do not treat the dog or fog the house. Wrong biology. Dangerous chemistry.

Matching tools for these steps can be bought on Amazon. Buy the field kit.

Buy on Amazon

Tools for head lice

A nit comb and current pediatric protocol. This is not a house insect and not a reason to fog a sofa.

As an Amazon Associate, Pest Kill earns from qualifying purchases. The EPA label is the law for any pesticide. These links match the sequence on this page — they are not a shopping list instead of identification. Details: advertising disclosure. Browse the full tools catalog.

Stainless nit comb

Hardware

Stainless nit comb

Head lice are a comb-and-protocol job, not a fogger job. Follow current pediatric guidance. Do not treat a sofa for a scalp insect.

Buy on Amazon

Do not use a bed-bug fogger on a scalp problem.

Prevention that actually sticks

  • Avoid head-to-head contact during outbreaks; that is more useful than a bag of pesticide.

When to hire a licensed professional

Pediatrician or school nurse. Not a pest-control company as the primary.

Legal and safety notes. Pediculicides are drugs or pesticides with pediatric rules. Never use lindane or agricultural products except as a clinician in rare labeled cases — most families should stay with standard OTC/Rx lice products.

United States and Tier 1 notes

Worldwide human parasite. Same logic in all Tier 1 countries with local product names.

Common questions

Do lice jump from carpets?

They crawl. They do not infest houses the way fleas do. Clean recently used linens; do not bomb the living room.

Sources

Written by the Pest Kill Editorial Team. Published August 25, 2026. Last reviewed September 13, 2026.