It quickly removes mould and sanitises stone, plaster, concrete, terracotta, ceramic, glass and marble surfaces. Excellent for effectively cleaning even joints. MUFFAVIA is ready to use. Spray directly onto the surface to be cleaned, holding the bottle upright at a distance of about 15-20 cm from the point of application. Leave for about 15 minutes. Blot any excess product with a damp cloth to avoid possible dripping. If necessary, repeat the operation, then rinse with a damp sponge. For exterior surfaces, it is recommended, after removing the mould, to apply HIDRONAT as a deep penetrating water repellent, in order to drastically reduce the water absorption of the materials and to best counteract the regrowth of mould and moss. Approximate consumption: 13 sqm/1 litre. It is recommended to wait 12 hours before painting. Do not spray the product on wood, plants, textiles, metals and coloured plasters. Ventilate rooms well during and after use.