The "brush gizmos" work very well. They dip the chain in the solvent, the chain picks it up, on to the brushes. The brush bristles are long enough, and spaced so they get between the plates and scrub off the gunk. The down side it dirty solvent comes out of the gizmo and drips on the floor\bike as the chain comes out. And you left with a gizmo full of dirty solvent to take off the bike and dispose of. But it does work well. And is quick. It's best if used before the chain gets really dirty.