Bi-carb soda is a simple, safe and non-invasive cleaner that you can keep in your pantry.
Apply a bi-carb paste with a wire brush, then wipe clean and dry with a cloth.
Place a heatproof bowl with 1½ cups water and 2 tbsp bi-carb soda in your microwave. Cook on high for 1 minute to create some steam. Carefully remove bowl and wipe down the microwave with a clean cloth.
For stainless-steel sinks:
Rub the sink with a moist cloth and dry bi-carb to achieve a shiny finish. Rinse and dry.