There are a few things to consider when choosing the most hygienic chopping board. The first is the material. Wood and bamboo are naturally antibacterial, making them more hygienic than plastic. The second is the surface. A smooth surface is easier to clean and less likely to harbor bacteria than a textured one. Finally, consider how you will be using the board. If you're going to be cutting raw meat, choose a board that can be easily disinfected with bleach or another sanitizer.