Thank you for sharing.  Do you dilute the bleach first before spraying?  How long do you need to wait before the mold is gone?  Do you need to wipe or mop the sidewalks afterwards?  Thank you for your feedback.  You have been entered for a chance to win up to $1,000! We announce winners and new ways of earning cash prizes and cool stuff @Facebook.  You are automatically put into a drawing for a chance to be one of our 5 winners in the contest: (4) $250 & (1) $1,000. Contest ends on June 30, 2012.  Rules:  Good Luck!