Baby Bottle Warmer & Sterilizer Milk Heater Double Bottles & Steam Sterilization, Baby Food Warmer I used this from immediately after birth until around 5 months old. It was a great help when preparing formula at night! I am selling it because I no longer use it. Operation has been confirmed. There are some scratches, so please understand that this is a used item. (Please check the images for scratches and stains)