After a lice infestation, what is the best way to clean your floors, curtains, clothes etc.?

Lice: Washing, soaking, or drying items at temperatures greater than 130°f (54.4°c) will kill stray lice or eggs. Furniture, carpeting, car seats, and other fabrics or fabric-covered items can be vacuumed; pediculicide spray should not be used. Eggs attached to fallen hairs are very unlikely to incubate and hatch at room temperatures and, if they did, the nymphs would need to find a source of blood.

Lice Infestation: Vacuum the floor and furniture, particularly where the infested person sat or lay. However, spending much time and money on housecleaning activities is not necessary to avoid reinfestation by lice or nits that may have fallen off the head or crawled onto furniture or clothing.