My woven pendant shades were not intended for outdoor use- and quickly mildewed as soon the humidity hit here in Alabama. As a last effort, I tried the 30 second cleaner on them and it WORKED!! I then sealed them with clear flexseal and hope the mildew will stay away for good! *disclaimer- using the 30 second cleaner on woven material is not one of the recommended uses… I did a test spot first. LTKSeasonal LTKstyletip LTKFind