I would much rather hear from a parent of a possible lice exposure than to find out the hard way...which happened to us last year..long story there.
However, during that time, I found a home remedy that does not use chemicals at all. It is a bit messy but it worked the first time 100%!
* Drench hair in olive hair and cover with a shower cap.
* Sleep overnight in it or leave on for 2-3 hours using a blow dryer to heat the oil up a bit. It will run so have a towel handy.
* Wash hair with Dawn or other grease-cutting dish soap.
* After washing, use a white vinegar rinse, let that soak in hair for 5 minutes.
* Wash hair as usual.
* Comb out using lice comb.
The oil clogs the breathing function of the lice and the white vinegar destroys the clue that holds the nits onto the hair.
I used this on myself when I got the lice..shoulder length hair. It worked and I was disgusted as I combed out my hair. I did repeat it in two weeks just in case all of my cleaning did not work :0) I will use this method from now on as my son hated the chemical treatment..burned his scalp.
J. S.