To use your Harry Potter Dark Arts Mug, simply fill it with your favorite hot beverage like coffee or tea and enjoy. The mug can be washed in the dishwasher for easy cleaning. As for the socks, just put them on like any other pair. They're great for everyday wear or for showing off your love for Harry Potter. When it's time to clean them, machine - wash them in cold water and tumble dry on low. Avoid using bleach or harsh detergents as they might fade the Dark Art symbols. Also, don't iron directly on the symbols to keep them looking sharp.