Whether baby bottles are dishwasher safe depends on the materials used in their construction. Glass and some plastic bottles can withstand the heat and harsh detergents of a dishwasher. However, some types of plastic, such as polycarbonate (PC), may release harmful chemicals that can contaminate the milk and pose health risks for the baby. It is crucial to check the manufacturer’s instructions for proper cleaning and sterilization methods, which may include handwashing and boiling.