Using this mug is easy. Just pour your hot or cold drink into it and watch as the TV screen on the mug changes. It's really fun to see the transformation. When it comes to cleaning, always wash it by hand. Don't put it in the dishwasher as it might damage the heat - changing effect and the artwork. To keep it in good condition, dry it thoroughly after washing and store it in a safe place away from sharp objects. This way, you can enjoy your unique Retro IT Themed 3D Heat Changing Television Design Ceramic Mug for a long time.