A simple and effective brush specifically created to clean ropes.

Simply fill a clean bath with cold water and soak your rope for a couple of minutes. Twist the brush onto the rope then run the rope through the brush while holding it firmly under water. Rinse and repeat as needed.

Cleaning a rope like this can dramatically improve it's handling; removing trapped grit may also prolong the your (rope's) safe life!  Adapts easily to different rope diameters.