Shower doors do there part in keeping a shower enclosed and water detained. However they can be tricky to clean at times especially if they have been neglected for some time. The minerals in water cause stains that can be difficult to remove. A client taught me a trick I never knew of which consisted of using Jet Dry. You know the product that is used in our dishwashers to avoid stains. Makes sense when you think about it but I guess I never thought to try it in a shower! Add jet dry to a spray bottle with some water and watch it do tricks!