Hi Jennifer,
Unfortunately, head lice is a very big problem in the school system. I have four children (3 girls with long beautiful hair). Each of them have gotten head lice from another child at school. I found out that it is best to get a prescription lice shampoo from my doctor to make sure that all the lice and eggs are killed. The over the counter remedies no longer have full effect on the lice.
I also learned that you need to suffocate any lice that might have gotten on to things like throw pillows, stuffed animals, etc. You do this by heating in the dryer and then placing these items in plastic garbage bag for four to six months. I did find that Rid has a furniture spray which seems to work on sofas, love seats, easy chairs, and carpet.
I bought a large magnifying lamp to help me search for the "nits" in my daughters' hair. Every nit has to be pulled individually off each strand of hair. This is a very tedious job especially with long, blond hair; but is very necessary. If even on nit is left on, new lice will develop. It took me 3 hours per daughter to carefully go over every strand of hair on their heads.
I had to go through the process several times before we were completely lice free in our household.
Another method I used (because the prescription shampoo is very harsh on the hair) is smothering the hair with MAYO and wrapping the hair in Saran Wrap at night and then washing the hair in the morning before going to school. The mayo not only suffocates the lice but conditions the hair.
I found that putting my daughters' hair in a bun and covering it with a cute hair net with a bow kept their hair from being easily accessable for lice on other children to transfer to their heads. I would also use hairspray on their hair to further discourage the lice from transfering.
Understand that there are several times of year that lice are more likely to be a problem - beginning of school, after an extended holiday (Thanksgiving, Winter Break, Spring Break).
Also, remember that you need to treat everyone in the family once lice is found on one person. The only exception is a very young child. Their hair tends to be too fine for the liking of lice. Lice tend to prefer very healthy, clean hair to nest in.
You also need to treat every area that anyone has slept on, sat on, or placed their head on. Don't forget the areas where the hair is brushed or treated at (carpets, bedspreads, blankets, pillows, stuffed animals, etc.).
Boil all hair brushes and combs. Replace any pony tail holders that are cloth. I found that putting allergy covers on all the mattresses and pillows also prevented lice from infesting our beds.
I hope all this helps. I am glad that my children are in upper grades now where the lice problem seems to be almost nonexistent.
Karen - mother of 4