Stainless steel is a low-carbon steel that contains at least 10% Chromium. The addition of Chromium gives the steel its unique corrosion-resisting properties. It is also considered the most hygienic surface for bowls and dishes. Most Wetnoz bowls contain 18% Chromium and 8-10% Nickel. Wetnōz uses stainless because it is extremely durable, resists corrosion and stands up to many chemicals.

Stainless steels are very resistant to rust; however, this does not mean that they are impervious to it. Stainless steel must be kept clean and free from contaminants. Frequent cleaning with mild soap and water and a cotton cloth is required. Sometimes stainless steel products will develop corrosion or discoloration due to environmental conditions. The following is a list of common conditions that cause corrosion or discoloration of stainless steel and should be avoided:

• Cleansers containing Chloride – this includes bleach and any cleaners containing bleach.
• Concentrated soap residue – chemical additives will cause discoloration and some dried soaps actually look like rust.
• Water with high Iron content – can leave a rusty residue, especially if allowed to stand for long periods of time.
• Contact with Iron materials – including steel wool.
• Salts – contain Chlorides

Any discoloration or corrosion should be removed as soon as possible or permanent discoloration and/or pitting of the surface could occur. Usually, the product can be restored to its original condition. Most discoloration can be removed with a mild cleanser (Ajax or Stainless Steel Cleaner) and a ScotchBrite pad. The surface should then be thoroughly rinsed with clear water. With proper maintenance, stainless steel should maintain its luster and appearance indefinitely.