Head lice prevention tips can save you a lot of aggravation. Explain to your child how head lice are spread. Licenders provides a lice video on its website which shows what lice look like and how to comb out lice.Head lice prevention tips can save you a lot of aggravation. Explain to your child how head lice are spread. Licenders provides a lice video on its website which shows what lice look like and how to comb out lice.