This is a very simple and effective good vinyl cleaner, good quality, simple to take all the visible dirt... but you must to know how to do it:
-you take the brush and open the auto-clean protection (yes, this plastic bar serve to clean the brush after use!)
-put the brush in the vinyl (for me it's better if you turn on the turntable and you simple approach the brush staying in the same place
-after 3 or 4 tour of the vinil (without the pick-up arm! idiot!) you deplace the brush into the center circle with the dirt, and you retire the brush and clean it with the plastic bar
-repeat the action if there are even dust (cachaste weon?)
:)