Do not use if the product is scratched or cracked before use.Wash with dish detergent before first usage.Do not rapidly heat or cool.Do not drag over a table.Do not drop this product or hit it on other objects.Stop using this product immediately if it becomes damaged.Do not use this product for purposes other than its intended purposes.Do not heat while empty.Read your microwaves instruction manual before use.Shorten the heating time for foods with low moisture content or for small amounts of food.