To put it bluntly, my RV was filthy, from the green roof (thanks to the overhanging tree) to the slide out seals. Bio-Kleen cleaned everything, the fiberglass roof and body, the metal Ford cab, to the rubber seals, and dirty caulk. Once I saw how well this worked, I ordered a second bottle. And since it's biodegradable, I had no worries about the grass I was parked on. Simply a great product!
