If you value your knives, we recommend washing your knives with warm, soapy water after each use. Rinse carefully and dry with a towel. Wusthof knives can be used in the dishwasher (except with wooden handles), however it is not recommended. The life of your knife will be reduced with this process. There are few reasons why we do not recommend washing your kitchen knives in the dishwasher:
1) Many dishwashers have a basket which knives, cutlery and other utensils are placed into. With both the loading and unloading of the basket, as well as the force of the water pressure, there is a danger that the blades will hit against one another and result in damage.
2) With dishwashers that have a cutlery drawer, the loading and unloading process may damage not only the knife blades, but also the covering of the cutlery drawer, so the coating will no longer provide the protection for which it was designed, causing rust to set in - this can lead to foreign rust deposits on the blade.
3) If the dishwasher is not used for a number of days, and the knives are not cleaned directly after use, the effect of the caustic food particles, such as pickles, spicy sauces, citrus fruits and vegetables that remain on the blade can lead to unsightly spots and corrosion. For added protection, we recommend routinely polishing your knives to remove any unsightly stains.