HG Moss Algae & Mold Remover is ideal for your front and back garden. Over time, algae and mould can build up on patios, walls, roofs, and all types of concrete outdoors. This effective algae cleaner makes your patio cleaner and your life easier. It's suitable for use on surfaces of up to 200 m2 and can be used on areas where grass and plants are present, as it has no harmful effect when diluted. The result can be seen within 36 hours, making it a convenient solution for keeping your outdoor spaces clean. The product comes in a 1L size.