Keep your silver pieces in a box or jewelry box, if possible sealed to avoid oxidation. Avoid using it when you are going to sweat or exercise, along with contact with creams, fragrances, lacquer… If you have left your piece in the open air and it has rusted, the best way to clean it is with warm soapy water, rubbing it with a gentle brush.
Another option is to put aluminum foil in the bottom of a container, fill it with boiling water and add two tablespoons of baking soda (20g). Immerse the silver objects that you want to clean and move with a wooden spoon. Rinse and dry with a clean cloth for gloss.