Using this shaker bottle is a breeze. First, open the flip - top chug spout and pour in your liquid like water or juice. Then add your powder, whether it's protein powder or a supplement. Close the spout tightly. Shake the bottle well. The internal whisk ball will do a great job of mixing everything evenly. When you're done, just take a drink from the chug spout. As for maintenance, it's easy to clean. Wash it with warm, soapy water after each use. Make sure to dry it thoroughly before storing. Also, don't use abrasive cleaners as they might damage the bottle. Keep it in a cool, dry place when not in use.