Use a lice shampoo. Follow instructions carefully.
Remove all snarls with an ordinary comb before using the Lice Comb.
Separate hair into half inch sections, place the teeth of the comb next to the scalp and gently comb to the ends of the hair. Be careful to pass through the same section several times and clean the comb after each pass. Repeat until the entire head is complete.
Check hair carefully and make sure you have not missed any lice or nits.
Continue to inspect hair daily for at least two weeks.
Clean comb with warm, soapy water after each session.