Stainless steel is a particularly pure material. Nevertheless, stainless steel requires a dry place where it is stored without high humidity. If you leave your Atago unprotected outdoors, undesirable effects will very quickly become apparent, especially if there are still ash residues inside. In combination with moisture, this leads to a chemical reaction that causes rust. Storage together with other types of steel is also not advisable in order to avoid a reaction. Therefore, after cleaning, store your Atago separately in a dry place, ideally in the appropriate transport bag.