Here is a common myth related to money that, once dispelled, might save you some:
Myth: Rinse dishes before placing them in the dishwasher.
Reality: Your dishes won't get any cleaner, according to tests by Consumer Reports. Just scrape off excess food into the trash or garbage disposal.
Another reason not to pre-rinse is the detergent doesn't have any grease or grime to stick to. So detergents attack dishes instead, making them appear cloudy, scratched or etched, according to the Whirlpool Institute of Kitchen Science.
Rinsing in the sink wastes water and energy because you're probably using heated water.