The siding cleaner works pretty good overall.
I Followed the directions and let it soak for 25 minutes after application, then used the car wash brush just before washing it off with hose (on Jet spray). Got everything off that way.
I expected it would take more scrubbing but it really was just a matter of brushing before rinsing.
The difference was very apparent, just look at the Before & After photos.
All in time took me less than 90 minutes.
