The Motorex Bike Chain Degreaser is an active and biodegradable formula that gets your chain back to like-new performance. It is great at attacking oil and grease contamination, penetrating the smallest gaps in your chain. This cleaner is not corrosive and does not leave a residue. Be sure to relubricate your chain after degreasing for the best results. The Motorex Bike Chain Degreaser is a great way to get contaminants out of your drivetrain.