General description One 5 litre bottle makes 25 litres of product and covers an area of 100-250 m² depending on the surface. Spear & Jackson Spray and Leave is a premium quality formulation designed to effectively remove algae, green mould, and lichen. It is suitable for use on various surfaces including patios, roofs, fencing, UPVC windows, sheds, caravans, boats, decking, and driveways. The treated area can be used as soon as it has dried, and the product helps prevent re-growth, providing results that last for months. Technical specifications Volume: 5 litres Covers: 100-250 m² Concentrate makes: 25 litres of ready-to-use product Other information Box contains: 1 x 5 litre concentrate The colour of the bottle may vary due to availability