Do not ever dry wipe Grenagloss boards. The best results can be achieved by using a soft micro-fibre cloth or chamois with a non-abrasive soap or detergent
Grease or oil can be easily removed by kerosene.
The surface finish can be damaged by solvents which react with acrylate (organic solvents like: petrol, methyl benzene, acetone, etc.), window cleaners or other acids.
Avoid extreme mechanical strain, especially scratching and rubbing the surfce by sharp or abrasive objects (do not use brushes, scrapers, scourers, etc.).