Liquipak Black Fluid is a multipurpose outdoor cleaner designed to eliminate bad odours and smells from drainage and urine. It is ideal for cleaning and sanitising most outdoor areas, including pathways, patios, driveways, drains, and livestock/pet housing. This concentrated formula is economical due to its dilution ratio and is safe for the environment. To use, add approximately 300ml of Black Fluid per 5 litres of water. This is a 100% UK-manufactured product.