Mix baking soda and water in a bowl so it becomes a paste.
Dip a rag into the paste and rub the paste onto the stain area. Use some elbow grease to work the paste into the stain.
Rinse the rag and wipe the stain area down with it.
Pour bleach onto a rag and rub any spots of the counter that still have stains. Rinse the rag after the stain disappears and apply a teaspoon of dishwashing soap to it. Wash the area with the soapy rag and rinse the countertop immediately so the bleach doesn't fade the countertop.