Programs should develop and follow procedures for the preparation and storage of infant formula that ensures the health and safety of all infants. Formula provided by parents/guardians or programs should come in sealed containers. The caregiver/teacher should always follow the parent or manufacturer's instructions for mixing and storing of any formula preparation. If instructions are not readily available, caregivers/teachers should obtain information from the World Health Organization's Safe Preparation, Storage and Handling of Powdered Infant Formula Guidelines. Bottles of prepared or ready-to-feed formula should be labeled with the child's full name, time, and date of preparation. Prepared formula should be discarded daily if not used.