2 of 2 people found the following review helpful
1.0 out of 5 stars
Failed to remove algae streaks, 10 July 2013
I used this product on an awning above a window. There are three streaks of green algae across the width of the awning caused by the awning being rolled up outside in wet weather. The product made no impact at all on the stains. I followed the instructions carefully and even had a second attempt at removing the stains. Very disappointed!