Thetford RV Roof Cleaner and Conditioner, 32 fl. oz [VERSATILITY]: Thetford's Rubber Roof Cleaner &amp; Conditioner is specially formulated to clean your RV's EPDM rubber roof [PERFORMANCE]: The active components of the cleaner dissolve and clean heavy grime and chalk accumulation [UTILITY]: Removes oxidation, tree sap and bird droppings from rubber fiberglass &amp; aluminum roofs [CONVENIENCE]: Helps prevent black streak and protects against UV rays, extending the life of your RV [SAFETY]: The petroleum-free, biodegradable, non-toxic and non-abrasive formula is safe for all EPDM rubber roof systems [FUNCTIONALITY]: Premium RV Rubber Roof Cleaner &amp; Conditioner acts as a degreaser and cleaner and contains no abrasive components