Most people wonder where did the head lice come from and how did the child's school get head lice, if the school had been cleared of head lice already. Most lice infestations occur during school vacation. Many people decide to travel and visit family during vacations. During their stay, they encounter head lice, and then travel back home with it. The kids will then return to school and it spreads from kid to kid, and kid to parents and siblings, and so on. When you are traveling to a relative's house, you should sleep on freshly clean sheets. You shouldn't sleep on sheets that your relative had slept on the night before. You should travel with your own towels, combs and hair ties so that you don't have to borrow your family member's items. You should consider having your child(ren) sleep by themselves, since it is very easy for the head lice to travel from head to head if the children are sleeping together. It is also great to have the environmental lice repellent spray so that you can spray it on the anything you may be laying your head on, as well as the prevention oil. Sometimes your family members don't know they have head lice and realize it once it is too late, and it has spread to more family members. It can be very stressful to come back home from a vacation, and then find out that you family may have head lice, so take actions to keep the head lice away.