How should a house be treated for lice? - briefly
Wash all bedding, clothing, and washable fabrics in hot water (≥130 °F) and dry on high heat, vacuum carpets and upholstered furniture thoroughly, and seal any non‑washable items in airtight bags for at least two weeks to eliminate remaining lice and nits.
How should a house be treated for lice? - in detail
Treating a residence for a lice infestation requires a systematic approach that eliminates live insects, eggs, and any potential sources of re‑infestation.
First, remove personal items that can harbor lice. Wash all clothing, bedding, towels, and fabric accessories in hot water (minimum 130 °F/54 °C) for at least 10 minutes, then dry on high heat. Items that cannot be laundered should be sealed in plastic bags for two weeks, a period that exceeds the lice life cycle.
Second, clean the environment thoroughly. Vacuum carpets, rugs, upholstered furniture, and cracks in flooring using a high‑efficiency vacuum. Immediately discard the vacuum bag or empty the canister into a sealed bag and discard it. Mop hard surfaces with a disinfectant solution that is safe for the material. Pay special attention to areas where the infested individuals spent time, such as bedrooms, living rooms, and vehicles.
Third, treat non‑washable surfaces. For fabric items that cannot be laundered, apply a steam cleaner set to a temperature of at least 212 °F (100 °C) for a minimum of 10 seconds per spot. Steam penetrates the material and kills both lice and nits.
Fourth, use a residual insecticide only when necessary. Choose a product specifically labeled for head‑lice control on indoor environments, following manufacturer instructions regarding dilution, application method, and ventilation. Apply to carpets, upholstery, and cracks, avoiding direct contact with humans and pets. After treatment, keep the area well‑ventilated for the recommended period before re‑occupying.
Fifth, implement preventative measures. Regularly inspect hair and scalp of all household members, especially after close contact with others. Encourage the use of personal bedding and clothing that are not shared. Maintain a routine of weekly vacuuming and laundering of linens at high temperature.
By following these steps—laundering, thorough vacuuming, steam treatment, targeted insecticide use, and ongoing prevention—the household environment can be effectively cleared of lice and protected against future outbreaks.