When used to clean natural stone, supermarket products can often cause more harm than good as this recent customer of mine discovered this the hard way! Originally from South Africa, she had lived in a flat in Clapham for a couple of years, but had to suddenly return home earlier than expected. However, part of her flat rental agreement required her to leave the property clean and as she found it, including the fantastic Slate shower cubicle. In a rush, the customer had attempted to clean
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