How to poison lice in the house? - briefly
Use a registered pediculicide, such as permethrin 1% lotion, applied to the scalp and hair according to the product directions, then repeat after 7‑10 days to kill newly hatched nymphs. Wash all bedding, clothing, and upholstered items in hot water or treat them with an appropriate insecticide to remove residual insects.
How to poison lice in the house? - in detail
Eliminating head‑lice infestations inside a dwelling requires a systematic approach that combines chemical treatment, environmental sanitation, and safety precautions.
Select an appropriate insecticide approved for indoor use against lice. Products containing permethrin (1 %) or pyrethrin are widely recommended; for resistant populations, a carbaryl or malathion formulation may be necessary. Verify that the label permits application on bedding, furniture, and carpet. Prepare the solution according to manufacturer instructions, measuring precisely to avoid under‑ or overdosing.
Apply the pesticide to all potential habitats:
- Wash all clothing, sheets, and pillowcases in hot water (≥ 60 °C) and dry on high heat for at least 30 minutes.
- Vacuum carpets, upholstery, and floor crevices thoroughly; discard vacuum bags or clean canisters immediately after use.
- Spray treated areas such as mattress seams, sofa cushions, and curtains, ensuring even coverage without oversaturation.
- Treat personal items that cannot be laundered (e.g., hats, hair accessories) by placing them in sealed plastic bags with a sachet of the insecticide for the recommended exposure period.
Allow the chemical to act for the full contact time stated on the label, typically 8–12 hours. After this interval, ventilate rooms by opening windows and using fans to disperse residual vapors. Conduct a second application after 7 days to target newly hatched nymphs that survived the initial treatment.
Implement protective measures for occupants during and after application:
- Require all residents and pets to vacate the treated spaces for the duration specified by the product’s safety data sheet.
- Use disposable gloves and a mask when handling the pesticide.
- Store remaining insecticide in a locked cabinet out of reach of children.
Monitor the situation by inspecting hair and scalp daily for live lice or viable nits. Continue weekly checks for at least four weeks; if infestation persists, consult a medical professional for prescription‑strength options such as ivermectin or benzyl alcohol lotion.
By adhering to these steps, the infestation can be eradicated while minimizing health risks to humans and animals.