"Oh, we have that comb."
Upon talking to the parent later, I found out that comb had been used a couple of times but was then set aside because they didn't feel it was doing the job. Now, this girl had quite a lot of lice, so I do not know how the comb was being used or if it had really been used at all. I must mention that this parent is not neglectful. Time, energy, and money had been put into this problem; the parent tried to deal with the child's head lice by giving the child a lice "treatment', doing extra laundry, and spraying the furniture with some supposed lice-killing chemical. Attention was given to the problem. However, the problem didn't go away and for some reason, the lice comb was not really given a chance.
But it's the lice comb that works. So-called "treatments" and "shampoos" will not solve the problem. Spraying furniture does nothing. The key to beating head lice is combing over time. I told this parent to bring out the comb again and to comb every couple of days for a couple of weeks. The combing sessions don't have to be marathons - even just combing for a 1/2 hour every couple of days will lead to success.
If you are dealing with head lice, stop looking for the quick fix. Get combing and keep on combing until the lice and nits are gone. If the chemical treatments worked, I would recommend them, but they don't. A lice comb may not seem like a very snazzy solution and may not make the promises of a lice "shampoo", but it is simply your best tool in the fight against head lice.