Listen to Frank!

I think your W does not understand lice at all! The chances are almost 100% that they were never gone. They don't live a long time with no head. And the "treatments" are almost a waste of money, because if you don't get them all, it's almost like you never started. And what person in their right mind put insecticide on their kid's head? The only way to really get them is a good nit comb, and a lot of time. Not just once, but several days in a row. They are a real pain to get rid of!