Mosgo Algae Remover is ideal for the removal of red and green algae on driveways and buildings. Mix 1 part of Mosgo Algae Remover with 5 parts water i.e. 5 litres water and apply using a brush or sprayer. Protect growing plants from direct spray. If spillage does occur wash off with water. After 48 hours heavy growths can be removed if so desired. Do not apply during periods of extreme heat, frost or wet weather. Protect from frost. This bottle covers approx 750 sq feet. It is important to read the instructions before use.