Cleaning aluminum sheet trays: it is advisable to use a soft oiled cloth. Washing with water and caustic solutions is not recommended.
2. Cleaning aluminum trays: no specific instructions.
3. Cleaning teflon-coated trays: they should be cleaned weekly with a non-abrasive sponge and running water max 60°C. Do not use high-pressure steam cleaners or caustic solutions (the use of steam is always discouraged). Do not scratch the coating with metal tools or abrasive brushes.