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Stainless steel and glass boards, especially when well-maintained and free of deep scratches, consistently registered low or undetectable bacteria levels. The stainless steel board was particularly impressive, likely due to its smooth, non-porous surface that’s easy to clean and difficult for bacteria to colonize.
The Dirty Truth About Wood and Porous Plastics
Wooden boards and certain plastic models, especially those with numerous cuts, demonstrated higher bacterial counts, sometimes hundreds of thousands or even over a million bacteria. The porosity of wood and scratches on plastics provide refuge for bacteria, especially biofilms, making them more challenging to disinfect thoroughly.