A dirty drive train is the number one loss of mechanical efficiency on your bike. You cannot reap the full performance benefits of GRAX if your drive train is dirty. We believe many degreasers and cleaners on the market are harsh and not designed for practical home use. GRAX OFF was designed to be non-toxic, biodegradable, and easy/safe to use at home. The GRAX OFF formula is specifically tuned to remove GRAX chain lubricant. GRAX OFF squirts a very thin line of cleaner that can be applied directly to your chain, drive train parts, and a scrubbing brush. Then, just scrub diligently, rinse, and repeat as needed until your drive train is grit-free. After it's dry, you are ready to GRAX up! GRAX OFF is one 16oz bottle.