How to treat a house after lice appear? - briefly
Remove all infested items, wash bedding and clothing in water ≥ 60 °C, vacuum carpets and upholstery thoroughly, and apply a residual insecticide spray to cracks, baseboards, and furniture. Repeat the cleaning and treatment after seven days to eradicate any newly hatched lice.
How to treat a house after lice appear? - in detail
A lice outbreak in a residence requires immediate, systematic action to eliminate the parasites and prevent re‑infestation.
First, remove all personal items that can be laundered. Wash clothing, bedding, towels and curtains in hot water (minimum 130 °F / 54 °C) and dry on the highest heat setting. Items that cannot be machine‑washed should be sealed in airtight plastic bags for two weeks, the typical lifespan of a louse.
Second, treat all upholstered furniture and carpets. Vacuum every surface thoroughly, paying special attention to seams, crevices and the undersides of cushions. After vacuuming, empty the canister or bag into a sealed container and discard. For persistent infestations, apply a steam cleaner set to at least 130 °F, as heat kills both lice and nits.
Third, address the environment with an approved insecticide. Choose a product specifically labeled for head‑lice control on indoor surfaces. Follow the manufacturer’s instructions precisely: apply to baseboards, door frames, and any area where hair may have fallen. Ensure proper ventilation during and after treatment.
Fourth, implement a monitoring protocol. Place transparent sticky traps near sleeping areas and high‑traffic zones. Inspect traps daily for three weeks; any captured insects indicate ongoing activity and may require repeat treatment.
Fifth, educate occupants on preventive measures. Advise regular hair inspections, avoidance of sharing personal items such as combs, hats and headphones, and immediate laundering of any contaminated garments.
Finally, schedule a follow‑up inspection after two weeks to confirm eradication. If live lice are still detected, repeat the cleaning and treatment cycle before seeking professional pest‑control assistance.