Thanks, it did take a fair bit of elbow grease! lol. It's amazing how durable the KIA plastic is, it responded well to the chemical we thought. But we had to resort to using t-cut on the boot door window, the UG-90 etched itself to the glass. But with a combination of t-cut, Wurth industrial cleaner and glass cleaner, it came up looking almost as good as new. I'll certainly remember not to leave a rallle can in my Golf's boot.....