Non-chemical DIY lice remedy. I was told years ago that lice don't like coconut. For that reason alone my girls always shampoo with coconut shampoo and never get lice (even when the school has had outbreaks).
Rubbing alcohol is also great for removing lice. Fill a spray bottle with alcohol and add a few drops of lavender oil. Go outside and apply the mixture generously to your scalp and hair. Comb your hair to remove the dead lice. The Wisconsin Division of Public Health recommends to leave used lice combs soaking in the mixture for at least 1 hour to make sure all the bugs are taken care of.