One 5lt bottle makes 25lts of product Covers 100-250m2 depending on the surface Premium UK Manufactured Brand - Removes algae, green mould, and lichen Designed for use on patios, roofs, fencing, upvc windows, sheds, caravans,boats, decking and driveways Treated area can be used as soon as it has dried Helps prevent re-growth see results that last for months Product Description Spear & Jackson Spay & Leave is a premium quality formulation that will keep on working for many months due to it's strong cleaning power, results will be visible in a few days and will keep improving over time. Spear & Jackson's products have become widely recognised for their heritage and high quality so you can rest assured that buying British is buying the Best Box Contains 1 x 5 litre Concentrate Note: The colour of the bottle may wary due to availability