The best way to keep your stone countertops clean is to wipe up spills as soon as they happen. Use a soft cloth or sponge and warm water to clean stone surfaces. For tougher stains, you can use a mild soap or stone cleaner. Avoid using harsh chemicals or abrasive cleaners on stone surfaces, as they can damage the stone. When cleaning stone countertops, always wipe in the direction of the grain to avoid damaging the surface.