How can lice eggs be destroyed? - briefly
«Nit» eradication requires either thermal or chemical action; washing infested fabrics at ≥ 60 °C, applying a pediculicide containing permethrin or dimethicone, and using a fine‑toothed comb on damp hair eliminate the eggs. Immediate re‑inspection after 7–10 days confirms complete removal.
How can lice eggs be destroyed? - in detail
Lice eggs are highly resistant structures that require targeted strategies to ensure complete eradication. Effective control combines chemical, physical, and environmental measures.
Chemical agents designed to penetrate the protective shell include:
- Permethrin‑based formulations, applied to the scalp and left for the recommended duration to disrupt nerve function in the embryo.
- Pyrethrin mixtures, often combined with piperonyl‑butoxide to enhance penetration.
- Malathion lotion, providing prolonged contact and acting on both mobile insects and immobile eggs.
- Spinosad suspension, interfering with nicotinic receptors and achieving high ovicidal rates.
- Ivermectin lotion, delivering systemic activity that reaches developing stages within the egg.
Physical techniques focus on heat and mechanical removal:
- Wet combing with a fine‑tooth nit comb, performed on damp hair at intervals of 48 hours for at least three sessions.
- Steam treatment using a device that generates temperatures of 130 °F (54 °C) or higher, applied for a minimum of 10 minutes to the scalp and hair.
- Hair‑dryer method, directing hot air at the scalp for several minutes while combing to dislodge and destroy eggs.
- High‑temperature laundering of clothing, bedding, and towels at 130 °F (54 °C) for at least 30 minutes.
Environmental control reduces reinfestation risk:
- Seal non‑washable items in airtight bags for two weeks, the lifespan of a louse egg.
- Vacuum carpets, upholstery, and vehicle seats to remove detached eggs.
- Discard hair accessories, brushes, and combs after thorough cleaning with hot, soapy water.
A coordinated approach—applying an ovicidal product, following with meticulous combing, and implementing strict environmental hygiene—maximizes the probability of eliminating all viable lice eggs.