We have found (against all reason) that we have an infestation of head lice at home. I don't know where my kids got it (and at this point it doesn't matter) but I've never had to deal with this before. When I was a kid I never got it, nor did anyone I know. There were never any reported cases in any of my schools.
Anyway, we've treated their heads and spent hours (upon hours upon hours) picking nits out of their hair. Bed linens have been washed multiple times, pillows and stuffed animals are put away in plastic bags, and we've sprayed the furniture and car interiors with a lice-killing spray. Oh, and we've called the parents of all the kids mine have been in contact with.
Am I missing something? How long does it take to ensure they're truly gone?