I’d love to say everything is dishwasher safe, but the reality is the pieces you use and love will last longer if hand washed with warm soapy water and a gentle brush or sponge.Avoid leaving ceramics submerged in water for days at a time. Even if the glaze is not crackled, small chips can expose the clay underneath and absorb minute amounts of water, weakening the form over time. Common sense is key.Domestic dishwasher detergents are much stronger than any dish soap, and contain chemicals which may damage the surfaces over time.  It is no surprise that commercial ware survives harsh environments... In industry, clay and glazes are formulated for durability over aesthetics every time. The soft, delicate surfaces of some of the most beautiful pieces from masters all over the world through history would easily be destroyed by weekly dishwasher cycles. I do routinely test my functional work in these environments with no detrimental effects, although dishwashers are best avoided for longevity. A simple air drying rack is helpful. Often a quick rinse in the sink followed by air drying before storing is all it takes.