Knowing the dangers in and out of the house is conquered through experience and children have a long way to go till they can protect themselves without your assistance. Until the moment they will learn to appreciate the value of door locks and the problems, which come from lack of proper home security, they are completely under your wings. You need to create the right environment, where they will be safe and there will be no reason for you to worry about domestic dangers, which can compromise their well-being and family tranquility. Your job as parents is to take the required precaution measures being very thorough with lock repair, careful with keys and inventive with dangerous stuff inside the house.