How should laundry be treated for lice? - briefly
Wash clothing, bedding, and towels in water at a minimum of 130 °F (54 °C) and dry on high heat for at least 20 minutes; if items cannot be laundered, seal them in a plastic bag for two weeks to ensure all lice and nits are eliminated.
How should laundry be treated for lice? - in detail
The washing process must eliminate both live lice and their eggs. Use water that reaches at least 130 °F (54 °C); this temperature kills nymphs and adults. If fabrics cannot tolerate hot water, combine cold‑water cycles with a detergent that contains a lice‑killing agent or add a measured amount of non‑chlorine bleach (sodium hypochlorite 5 %). Run the cycle for the longest setting available to ensure thorough agitation.
After washing, place items in a dryer set to high heat for a minimum of 20 minutes. The heat penetrates fibers and destroys any remaining eggs. For items that cannot be tumble‑dried, seal them in a plastic bag for two weeks; the lack of oxygen prevents hatching.
Non‑washable materials—such as stuffed animals, hats, or delicate garments—require alternative treatment. Options include:
- Professional dry cleaning with a lice‑effective solvent.
- Application of a 0.5 % permethrin spray, following label instructions and allowing sufficient drying time.
- Enclosing the item in an airtight container for two weeks, then laundering if possible.
During collection, wear disposable gloves and place contaminated clothing directly into sealed laundry bags. Avoid mixing untreated items with clean laundry to prevent cross‑contamination. Clean the washing machine drum and dryer lint trap after each cycle with a disinfectant wipe.
Finally, store laundered items in sealed containers until they are needed. Regularly washing bedding, towels, and clothing after any suspected infestation reduces the risk of re‑infestation.