With appropriate home care or prescription medication, more than 90% of lice infestations can be cured.Treatments are more effective in killing lice than nits. This is why combing is so important to remove eggs and to repeat the anti lice treatment in seven to 10 days. The proper treatment, including thorough cleaning, should get rid of the lice. Scratching can make the skin become raw, or even cause a skin infection. Lice respond well to treatment and are not associated with any lasting symptoms.