Do NOT soak in water or put in the dishwasher Wipe down with damp cloth. Rinse with clean water. Wipe Dry. For more stubborn spots, sprinkle salt on the board. Wet a sponge with hot water and rub until it looks clean. Rinse and pat dry.
Wipe down with a towel damp with white vinegar or bleach or 3% hydrogen peroxide. Rinse with clean water. Wipe dry.
It is recommended to treat once a year with mineral oil, beeswax or a combination.