Kemp
New member
I am having a tough time removing black weathered streaks from stucco, dryvit type walls. I can get some of it removed but it tales too long and I cannot get it as clean as I like. In addition to the standard SH and soap mix I have tried Lysol toilet bowl cleaner (works on most rust) and CLR. CLR removes some but not all. Any body have any suggestions on commercial cleaners that can take care of these stains quickly without lots of scrubbing?