Why are my dishes not getting dry enough?
The most common causes of poor drying are an empty rinse aid dispenser, improper loading that causes items to nest together, or selecting a cycle that does not include drying (such as Rinse and Hold). Always use a liquid rinse aid even if your detergent contains a drying additive, as it significantly improves drying results. Note that plastic and Teflon items typically do not dry as well as other materials due to their inherent properties. (Page 18)
From the official Bosch Series 800 Dishwasher manual, page 18
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