Many kitchen carts are topped with wood, which allows them to double as extra counter space. This is great! But you don’t necessarily want to use them as cutting boards. For one thing, it’s much harder to clean a surface that you can’t put into a sink for scrubbing. For another, with some exceptions, these surfaces aren’t made to be used as cutting boards. They may be made out of a material like bamboo, which is too hard and can blunt your knives, or medium-density fiberboard (MDF), which is constructed with glues and other materials that you don’t want getting in your food.