Your convertible soft-top has inbuilt waterproofing to keep you dry and you risk staining your soft-top if you use any regular trim cleaner. Use a convertible roof cleaner to remove any unwanted contaminants such as stains and bird droppings, and follow up with a convertible and cabriolet waterproofer to creates a protective barrier. This will protect the top from UV stains, bird droppings, acid rain and much more.