Head lice cannot live for very long without a food source. Lice can only live for six to twenty-four hours in carpet or upholstery. Lice eggs (nits) found in upholstery and carpet usually will not hatch because they need warmth to hatch and survive.
Even though lice cannot live long off of a person's head, it is still important to vacuum and wash linens to prevent re-infestation. Lice move quickly and will crawl onto a person's head when given an opportunity.
Linens and clothes do not need to be washed in a special manner. Washing with normal laundry soap in any temperature water will drown and kill them. Wash linens and clothes when lice is first found and after last lice combing treatment.
Soak all hair brushes and hair accessories in water to drown and kill lice. Do this after every use, until lice infestation is completely gone.
Vacuum all carpets and upholstery (including automobile carpet and upholstery) on a daily basis until lice infestation is completely gone.