Child Specialist Indirapuram. What precautions are needed while preparing food for complementary feeding? Follow proper hand washing with soap before preparing and eating the food. The foods shall be stored safely and served fresh after preparation. Use Clean utensils for preparing and serving the food. Spoons cups and bowls used for feeding the children shall we clean. Avoid using feeding bottle has it is difficult to clean and maintain the hygiene. Bottle feeding is injurious to the health of the child. Diarrhea, dehydration and malnutrition are usually the results of unsafe bottle feeding.