The water here is full of deposits and black bathroom fixtures always look awful after cleaning - they look like they have "pond scum" after the water dries - that is until I found your fiberglass cleaner. You just wipe on and wipe off with a rag and you don't even have to scrub!!! Plus I have never had to use gloves to clean my shower. Also our boat stays cleaned so easily because of this product. It's the greatest thing since grits - (well, not quite but close)!