The revolutionary way to clean gutters while standing safely on the ground. There’s no ladder, special tools or scrubbing required! Just attach to a garden hose, apply and rinse away. Krud Kutter makes it fast and easy to remove black streaks, dirt, grime & mildew stains from exterior metal surfaces. Simply attach to a garden hose, apply & rinse. Removes black streaks, dirt, grime & mildew stains. Fast-acting; works in just 5 minutes. Cleans up to 100 linear ft. Biodegradable. Bleach-free.