Final answer:
To eliminate head lice, use a medicated shampoo treatment, comb out nits and lice, and wash bedding and clothing. Home remedies like mayonnaise are not clinically supported.
Step-by-step explanation:
The proper steps for getting rid of head lice include using an over-the-counter lice treatment, such as a medicated shampoo formulated to kill lice, combing the hair with a fine-tooth comb to remove nits (lice eggs) and lice, and washing bedding and clothing that have come in contact with the infested person. Shaving the head is an extreme measure that is generally not necessary, and while some people may use home remedies like mayonnaise, evidence of their effectiveness is anecdotal and not clinically supported. It's also important to vacuum areas where the infested person has been to help prevent re-infestation.