Wright says that this purely natural solution not only combats lice effectively but also serves as a deterrent against mosquitoes.Of course, despite parents’ best efforts, some children may still get lice. In such cases, there are various methods available to get rid of them successfully.Lice can also affect adults, so using the tea tree oil spray for yourself as a preventive measure can help a great deal. While lice infestations can be bothersome, implementing these proactive measures can help keep your family lice-free.