Are these dishwasher safe?

Yes! bambu utensils are made from single pieces of bamboo; no glue is used, so there is no worry about utensils delaminating due to high temperatures and detergent. Secondly, there is no lacquer coating applied, so there's no coating to peel off. However, high water temperatures and detergents tend to over-dry the utensils, so we recommend hand washing in soapy water.