Butcher Block - Cutting board from Boos Blocks is made from solid endwood from walnut, making it ideal for professional chefs and home cooks alike. It is not dishwasher safe. To clean, wash with warm water and detergent and allow to dry completely. The cutting board must not be soaked or immersed in water. Oiled in every 3-4 weeks with Boos Block Board Cream and Boos Block Mystery Oil.