Using your CARYSIL WALTZ Black Granite Kitchen Sink is a breeze. Just place your dishes and utensils in the sink for washing. The X flume design will quickly drain the water away. When cleaning, you can use a mild detergent and a soft cloth. Avoid using abrasive cleaners as they may scratch the sink. For daily maintenance, wipe the sink dry after each use to prevent water spots. If there are any stains, a gentle scrub with a non-abrasive sponge should do the trick. The sink is resistant to acid and alkali, but try to avoid leaving harsh chemicals in it for long periods. And don't forget, it comes with a lifetime warranty, so you can use it with confidence.