How to treat items for lice? - briefly
Launder washable fabrics in water ≥ 130 °F (54 °C) and tumble‑dry on high heat for at least 20 minutes; seal non‑washable items in an airtight bag for a minimum of two weeks or apply a lice‑specific insecticidal spray according to label directions.
How to treat items for lice? - in detail
Treating personal belongings for lice requires a systematic approach that eliminates both live insects and their eggs. The process can be divided into three categories: washable fabrics, heat‑tolerant items, and non‑washable objects.
For washable fabrics such as clothing, bedding, and towels, use hot water (minimum 130 °F / 54 °C) in a standard washing cycle. Follow with a high‑heat dryer cycle lasting at least 20 minutes. If hot water is unavailable, soak items in a solution of 0.5 % permethrin or 1 % pyrethrin for 10 minutes, then rinse thoroughly and dry on high heat.
Heat‑tolerant items that cannot be laundered, including hats, scarves, and certain toys, can be placed in a sealed plastic bag and exposed to a portable heat‑treatment device or a dryer set to the highest temperature for 30 minutes. Alternatively, seal the items in a freezer at 0 °F / ‑18 °C for at least 48 hours; prolonged freezing kills lice and nits.
Non‑washable and heat‑sensitive objects, such as leather goods, hairbrushes, and electronic devices, require chemical treatment. Apply a spray containing 1 % permethrin or 0.5 % pyrethrin, ensuring full coverage of surfaces. After application, let the product remain for the manufacturer‑specified contact time (usually 10–15 minutes), then wipe with a clean cloth. For hair accessories, soak in a solution of 0.5 % permethrin for 5 minutes, rinse with warm water, and air‑dry.
Additional preventive measures:
- Seal all treated items in airtight bags for 24 hours to prevent re‑infestation.
- Dispose of disposable items (e.g., pillowcases, towels) that cannot be adequately decontaminated.
- Rotate treated items with untreated ones to avoid simultaneous exposure.
By adhering to these protocols, the risk of lice transmission through personal belongings can be effectively minimized.