Steve,

There are OTC shampoos, such as NIX and RID. Buy some, follow the directions, follow up with a nit (lice egg) comb. It may be neccessary to repeat. Both products come with instructions for handling of bedding and clothing.

Both of those are Permethrin products, so you may be able to use a Permethrin based clothing treatment in a pinch.

I googled a few minutes and found some neat stuff. A supposed home remedy is mayonaise applied thick and left on overnight. During WW II, DDT and Zyklon B (!?) were used as delousing agents.

In Harper Lee's, "To Kill A Mockingbird" there's something about lye soap and kerosene.

As you've already mentioned, hygiene is important. As is staying in good health.

Hope this helps,

Andy