How to treat clothing to get rid of lice? - briefly
Wash all affected garments in water ≥130 °F (≥54 °C) for at least 10 minutes, then tumble‑dry on the highest heat setting for ≥20 minutes; non‑launderable items should be sealed in a plastic bag for two weeks or frozen at ≤0 °F (‑18 °C) for 24 hours. This eliminates any remaining lice and eggs on the clothing.
How to treat clothing to get rid of lice? - in detail
Treating garments to eradicate lice requires thorough cleaning, heat, and isolation. Lice and their eggs cannot survive prolonged exposure to high temperatures or certain chemicals, so each method must be applied correctly.
First, separate all items that have been in contact with an infested person. Place clothing, bedding, towels, and accessories in sealed plastic bags for 48 hours; the lack of oxygen will kill any remaining organisms.
Second, wash washable fabrics in the hottest water the material can tolerate, typically 130 °F (54 °C) or higher. Use a regular detergent; adding a small amount of vinegar or a few drops of essential oil does not increase efficacy and can be omitted.
Third, dry the items on a high‑heat setting for at least 30 minutes. The combination of hot water and hot air guarantees the destruction of both lice and nits.
For items that cannot be laundered, apply one of the following heat‑based techniques:
- Place the article in a dryer on the highest setting for 30 minutes.
- Use a portable garment steamer, directing steam at all surfaces for several minutes.
- Expose the object to direct sunlight for a minimum of four hours on a hot day, ensuring the temperature reaches at least 115 °F (46 °C).
If heat treatment is unavailable, use a chemical approach approved for textiles:
- Spray a diluted solution of 0.1 % permethrin or 0.5 % pyrethrin onto the fabric, covering both sides. Follow the product label for contact time, usually 10 minutes, then launder as described above.
- Apply a 70 % isopropyl alcohol solution to non‑washable items, saturating the material, then allow it to air‑dry completely. Alcohol evaporates quickly, killing lice on contact.
Finally, store cleaned garments in sealed containers until the infestation is confirmed cleared. Repeat the washing and drying cycle after seven days to eliminate any eggs that may have hatched after the first treatment. Regularly inspect clothing for signs of reinfestation and repeat the process promptly if needed.