How to destroy lice? - briefly
Apply an FDA‑approved pediculicide (e.g., 1% permethrin) to damp hair, comb out nits with a fine‑tooth lice comb, and wash clothing, bedding, and personal items at 130 °F. Repeat the treatment after 7–10 days to eradicate any newly hatched insects.
How to destroy lice? - in detail
Lice infestations require prompt and thorough eradication to prevent re‑infestation and spread. Effective control combines chemical agents, mechanical removal, and environmental sanitation.
Chemical pediculicides remain the primary tool. Over‑the‑counter products containing 1 % permethrin or 0.5 % pyrethrin are applied to dry hair, left for the recommended duration (usually 10 minutes), then rinsed. Prescription options such as 0.5 % malathion or oral ivermectin are reserved for resistant cases; dosage follows the prescribing information and a second application after 7–10 days eliminates newly hatched nymphs. Resistance to pyrethroids is documented; confirm susceptibility before repeated use.
Mechanical removal eliminates existing insects and eggs. Steps include:
- Apply a conditioner to wet hair to reduce slippage.
- Use a fine‑tooth, metal lice comb, starting at the scalp and pulling toward the ends.
- Comb each section repeatedly, cleaning the comb after each pass.
- Perform the process every 2–3 days for two weeks.
- Repeat after 7–10 days to capture any surviving nymphs.
Home‑based treatments may supplement chemical methods. Applying a thick layer of mineral oil, olive oil, or dimethicone for 30 minutes, then combing, can suffocate lice. These substances do not kill eggs; follow with a standard pediculicide to ensure complete eradication.
Environmental decontamination removes residual stages from personal items. Actions include:
- Washing clothing, bedding, and towels in hot water (≥ 60 °C) and drying on high heat for at least 30 minutes.
- Sealing non‑washable items in a sealed plastic bag for 2 weeks.
- Vacuuming carpets, upholstered furniture, and car seats; discarding vacuum bags afterward.
- Cleaning combs, brushes, and hair accessories in hot, soapy water.
Monitoring continues for four weeks after treatment. Examine hair and scalp every 2–3 days; any live lice or viable nits require immediate retreatment. Documentation of each session helps assess efficacy and prevents unnoticed resurgence.