This cutting board is made of super high-density polyethylene plastic. The cutting boards are commercial dishwasher safe, including the spike temperature that exceeds 185°. They are the densest board you can buy that will not dull your knives. They are USDA, FDA, and NSF listed and approved by the Canada Dept. of Agriculture. Additional cutting board uses outside the kitchen reef tanks - Line the bottom of your reef tank with one of The Cutting Board Company's polyethylene boards. It helps to protect the bottom of your tank in the event that you drop something on it while setting up/moving your tank. Cleaning fish stations and bait boards,
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