The fibres of a synthetic carpet become damaged when walked upon, so that they trap dirt more easily. HG carpet and upholstery cleaner removes the dirt and fills up the gaps in the fibre surface with a dirt repellent layer. Woollen carpets have more or less the same problem, as the natural wool grease gradually disappears. HG carpet and upholstery cleaner replenishes it with a dirt repellent material. Treat the stains beforehand with HG spot and stain spray cleaner. Now spray the HG carpet and upholstery cleaner using a special machine and vacuum the surface immediately or brush thoroughly. Rub dry using a towel. One litre is sufficient for 30 square metres of floor surface area.