What are some good dish detergents to remove hard water stains?

According to Consumer Reports, the top brands are Glisten, Lemi Shine and Finish; all perform equally well on hard water build-up both on dishes and on the dishwasher itself. For cases of extreme hard water build-up, a second wash is often needed.

Though hard water build up can be removed with detergent, it is typically detrimental to the life of the dishwasher. In order to prevent hard water build up in the first place, Consumer Reports recommends using Cascade Complete with Dawn Action-Pacs, which neutralize hard water before it even has a chance to build up and become an issue.