Smeg uses the best, high quality materials, so it's wise to keep them looking good by cleaning them frequently - ideally after every use - and not allowing burnt-on food to remain on the surfaces for long. Cleaning little and often will keep your appliances always looking their best. Hot soapy water (using normal washing-up detergent) should tackle most spills and splashes and drying with a microfibre cloth will give you a streak-free shiny finish. You can also use general purpose household cleaners, but do not use products with high acidity, such as citrus based cleaning products, as this can effect the surfaces and have been known to dissolve away some of the function symbols on control panels. You can also use stainless steel cleaners from time to time, to lubricate and polish the stainless steel. Always spot-test in an inconspicuous area first and be sure to polish with the grain of stainless steel for best results.