i rarely clean mine. i like when they get compound all worked into them. i really dislike a fresh pad lol. only time i wash is if for some reason they get glazed over or i am buffing my boat which gets the pad all loaded with color. if it gets glazed over then thats a sign your using a little too much compound. if i do wash i just give a squirt of soap like dawn or car wash soap then just hose them off. sometimes just a hard spray of water from a hose will work good enough. pop it back on the buffer and spin dry.