Sheesh.....simple and cheap cleaning vinegar works wonders and safe to use. With all the rain and extreme temp swings we have been having some mold issues. A spray bottle with 6% cleaning vinegar gets sprayed onto the mold and next day it is gone. Wipe off or spray off, depending the surface and done. Areas that were sprayed last year ( wood windows) has not come back this year, at least not yet. The vinegar will not harm vinyl, paint or any other surface I have found.