I was searching Google, and found this http://www.kaiscience.com/photo_archive.php It says you must have permission to use these pictures, but maybe if you asked, it would be ok ? Regardless, it shows molds, and it's SPORES !!! This educates the customer, and provides an easy up sell to clean ALL the property A VERY interesting web site, more pages of interest on it too.
Superior Power Washing Chris Chappell 361-853-2513 Cleaning Shingle and Tile Roofs in Corpus Christi Texas No Pressure Roof Cleaning in Corpus Christi Texas       Texas Certified Roof Cleaner   Â