All walls are cleaned in a 3 step process that helps it stay cleaner longer than just plain conventional pressure washing. First we will pressure wash the wall to remove the top layer of black mildew and green algae also removing graffiti and other stains that needs to be removed from the walls. Second we apply our solution to the wall to set in and kill any remaining spores and root filament that was left behind from the initial pressure wash. Third we rinse the wall with fresh water as well as any landscape that is near the wall.