Most of us buy products such as juice, milk and yogurts. Often, these products are packaged in durable paper base cartons, such as the ones in the photos. Many of us who are not vegetarian or vegan reuse the same cutting board for meats, cheeses, breads, veggies and fruits. This unsafe application maximizes the chances of some bacteria from meats or vegetables surviving the wash and multiplying, which poses a health threat upon next use of the cutting board. (Especially if it's wooden with crevices in the texture).