How long will lice or nits live in sheets?

Lice and nits (lice eggs) typically do not survive long away from a human host. Nits can survive on bedding for a few days, while adult lice generally live only 1-2 days without feeding. Washing sheets in hot water and drying them on a high heat setting can effectively kill any lice or nits that may be present. Regular cleaning and vacuuming can help prevent re-infestation.