I use some stuff called miracle orrange,http://www.miracleorrange.com It cost $14.95 a bottle. Look at my pictures, they were taken the day I picked up my VX in Sept 08. I'm sorry I didn't take a before picture. Truthfully, I didn't think about it. It has been on since then and it looks the same today as then, doesn't attract dust unless it is still wet. Note: it doesn't turn the cladding black, just a deep gray.