How to eliminate a large number of lice? - briefly
«Apply a potent pediculicide approved for mass infestations, then comb thoroughly with a fine‑toothed nit comb while treating all affected individuals.» «Launder bedding, clothing, and personal items at ≥60 °C or seal them in airtight bags for two weeks to prevent reinfestation.»
How to eliminate a large number of lice? - in detail
A massive lice infestation requires a coordinated strategy that combines chemical, mechanical, and environmental measures. Immediate isolation of affected persons prevents further spread; clothing, bedding, and personal items must be sealed in plastic bags for at least 48 hours before treatment.
Chemical control relies on insecticidal shampoos, lotions, or sprays containing permethrin, pyrethrin, or ivermectin. Apply according to label directions, ensuring full coverage of hair and scalp. Repeat application after 7–10 days to target newly hatched nymphs. For resistant populations, consider a prescription‑only product such as malathion or benzyl alcohol, administered under medical supervision.
Mechanical removal complements chemical action:
- Fine‑toothed lice combs used on wet hair, repeated every 2–3 days for two weeks.
- High‑efficiency vacuum cleaners applied to mattresses, furniture, and carpets.
- Hot water washing (≥ 60 °C) and high‑heat drying (≥ 130 °F) for all washable textiles.
Environmental measures eliminate residual eggs and adult lice:
- Launder clothing, sheets, and towels in hot water, then tumble‑dry on high heat.
- Seal non‑washable items in airtight containers for two weeks, or expose to sunlight for at least 48 hours.
- Apply a residual insecticide spray to cracks, crevices, and upholstered surfaces, following safety guidelines.
Monitoring continues after treatment. Inspect hair and scalp daily for live lice; document findings. Conduct a second comprehensive combing session after the second treatment cycle. Maintain isolation protocols for an additional week to confirm eradication.