Millwood Manufacturing Green Mould & Algae Killer is a powerful concentrated disinfectant designed to eliminate mould and algae from hard surfaces without the need for scrubbing. This versatile 5-litre concentrate treats up to 170 square metres, making it an economical solution for both indoor and outdoor applications. Suitable for use on patios, driveways, fences, artificial grass, and kitchen surfaces, it kills green mould and algae within 2-4 days and helps clean surfaces in the coming weeks and months. The formula also kills black mould, though staining may persist. It can be used as a pre-paint fungicidal wash to prepare surfaces. Simply dilute 1-4 parts with water for normal use or up to 1-10 dilution for light growths, apply to dry surfaces using a garden sprayer or watering can, and allow 5-8 hours before rain. This concentrated formula provides effective treatment whilst controlling regrowth, offering a practical solution for maintaining clean, mould-free surfaces throughout your property.