The Muc-Off Bike Care Duo Kit covers Stage 1 and 2 in the Muc-Off cleaning system. Our award winning Nano Tech Bike Cleaner cuts through dirt, mud and grime quickly and safely without the need for acids or dangerous chemicals. This unique formula is also 100% biodegradable so it's safe for your bike and the planet. After you've given your bike a good clean with the Nano Tech Bike Cleaner, it's time to add some protection. Muc-Off Bike Spray is the ultimate post-wash water dispersant. Not only does Bike Spray rid your bike's frame and components of moisture, but it also leaves a non-sticky layer of protective PTFE to prevent rust and corrosion. It also makes future cleaning and maintenance a breeze.