How to treat a carpet for lice? - briefly
Vacuum the carpet thoroughly, then treat it with an EPA‑approved lice spray or a high‑temperature steam cleaner for at least 30 minutes; ensure the product reaches the backing and fibers. Repeat the process after seven days to eradicate any newly hatched nits.
How to treat a carpet for lice? - in detail
Treating a carpet infested with lice requires a systematic approach that combines mechanical removal, chemical treatment, and preventive measures.
First, isolate the area to prevent the insects from spreading. Remove all movable objects—furniture, toys, and rugs—from the affected zone. Vacuum the carpet thoroughly, using a vacuum equipped with a HEPA filter. Run the machine slowly over each section, overlapping strokes to capture both adult lice and nymphs. Immediately discard the vacuum bag or empty the canister into a sealed plastic bag and place it in an outdoor trash container.
Second, apply a suitable insecticidal spray. Choose a product labeled for pediculicide use on fabrics and carpets, containing ingredients such as permethrin (0.5 %–1 %) or pyrethrin. Follow the manufacturer’s instructions regarding dilution, application rate, and safety precautions. Spray the carpet evenly, ensuring coverage of fibers without saturating the material. Allow the product to remain on the surface for the recommended contact time, typically 8–12 hours, then ventilate the room.
Third, employ a post‑treatment heat method. Lice cannot survive temperatures above 130 °F (54 °C) for more than five minutes. If the carpet can be removed, place it in a large, sealable bag and expose it to direct sunlight on a hot day for at least two hours, or use a portable steam cleaner set to a temperature of 212 °F (100 °C). Move the steam nozzle slowly to penetrate deep into the pile.
Fourth, repeat the vacuuming and chemical application after 7–10 days. This interval targets lice that hatched from eggs missed during the first round, as their eggs require about 7 days to mature.
Finally, implement preventive steps: maintain low humidity, wash or steam‑clean any fabrics that come into contact with the carpet, and conduct regular inspections of household members for signs of infestation.
Summary checklist