The Muc-Off Bio Drivetrain Cleaner is the complete drivetrain cleaning solution. It can be poured into a chain cleaner device for use as a no-nonsense chain degreaser or sprayed directly to your chain rings, rear cassettes and derailleurs to clean your entire drivetrain within seconds. It's also fully biodegradable* and safe for metal, plastic, rubber and seals. You have never seen results like this - we can guarantee it! Why not try using Muc-Off Drivetrain Cleaner with the Muc-Off X-3 Dirty Chain Machine to provide the deepest clean on even the dirtiest chains! It's also the perfect partner in crime for the Muc-Off Bike Cleaner to keep your entire ride looking sweet.*Only contents are biodegradable.