How to Treat Lice With Listerine. If your children are in school, you're likely to experience lice. Getting it has nothing to do with cleanliness. They actually prefer clean hair because their nits (eggs) can stick to it better than dirty hair. There are many ways to treat lice. Consider using Listerine as an alternative as its large percentage of alcohol can kill the lice.
Cover the facial area and ears completely and leave only the hair exposed. Cover the floor and surrounding items or furniture with bags or blankets.
Pour Listerine in a spray bottle. You'll need different amounts based on hair length.
Put on gloves if you'll be the one spraying. Lift the hair ends and spray the scalp completely. Slowly work your way from the roots to the tips of the hair. Make sure the hair is saturated.
Cover the hair with a shower cap or a plastic grocery bag. If the hair is long, twist it into a bun so that the bag or cap completely covers the head. Allow it to dry at least 2 hours.
Use a lice comb to work through the hair. This combing will remove the nits or pull any remaining nits by hand. If you notice any live lice, treat again.