What is the best way to clean my dishwasher?

The best thing to use to clean the outside of a dishwasher is either a "micro-fibre" cleaning cloth or a product called "Stainless Steel Cleaner". The inside of a dishwasher should not need cleaning, however it is a good idea to take the filter out of the dishwasher about once a month and clean it with a soft brush and warm water. This will assist the machine in keeping the filter clean and maximises Smeg’s orbital wash technology performance.