Head lice are bloodsuckers. Once they fall off the body, they only survive for a day or two.
The chances that you’ll catch them from sitting on the sofa or laying on the floor is quite small. But follow these simple steps to help prevent another lice attack:
Wash and dry bedding, clothing, and stuffed toys using hot water (130 F) and high heat.
If the items can’t be washed, seal them in a plastic bag for 3 weeks. Dry cleaning also kills lice.
Vacuum upholstered furniture and rugs.