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Intense Dirt / Strong Stains
: Make an application of warm or hot detergent, or a
solution of an ammonia-based remover (household removers) and water. If this is not
enough to soften burned foods or charred deposits, use more aggressive products,
such as caustic soda removers used in household cleaning.
TIP
: Even in the case of stubborn dirt, try cleaning with the milder method.
Be patient and repeat the operation a reasonable number of times before
resorting to more severe cleaning methods.
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