Yep it's the combing that does it. For my DD I used normal conditioner with some drops of essential oils added (I think it was teatree and geranium... they are natural insecticides), put that in her hair and combed with a nit comb. You need a good comb so that you can get all the eggs. I found that it took several applications over the course of a week to completely get rid of all the lice and their eggs.