HG mould spray immediately destroys fungus and algae in damp places, inside and outside. For cleaning tiled walls (also suitable for marble) and grouting in the bathroom shower, toilet, kitchen, cellar, basement, sauna, swimming pool, garage, shed etc.. It cleans also facades, balconies, plant boxes, garden ornaments etc. but excluding wood. HG mould spray bleaches grey and black mould spots and green algae spots.