Here's why you should never rinse dirty dishes before putting them in the dishwasher
Today's dishwashers are so technologically evolved that even when a family is not large, washing dishes by hand often results in a consumption of water greater than that which would be used by this important household appliance.
Those who have used a dishwasher for some time and perhaps have bought one of the newest generations of dishwashers have probably maintained the habit of rinsing the dishes before putting them in the dishwasher and starting the wash cycle, but this could prove counterproductive and result in the dishes being in the end, still dirty!
via curiosity.com
Here's why rinsing dishes before putting them in the dishwasher could be a bad idea.
Why does this happen? Because in recent years the technology in household appliances has improved so much that today's dishwashers are often equipped with electronic devices and sensors that can detect the amount of dirt by measuring the level of turbidity of the water after the first rinse. In addition to calculating the load and, therefore, the amount of water needed for washing, the latest models are also able to understand what are the quantities of detergent and the temperature that is needed for each type of load.
If you are worried about rinsing and scraping the dishes well because you fear that the appliance will not be able to remove that kind of grime or dirt, what you are actually doing is giving the appliance information that indicates that the dishes only need to be washed lightly because basically, they are almost clean!
Of course we are not saying that you have to start the dishwasher without pre-treating at all the most encrusted dishes or to leave whole pieces of food attached to dishes and food containers, but you can avoid the prewashing of individual pieces, perhaps leaving them to soak in water for a little while before putting them on the dishwasher racks; in this way you will facilitate the elimination of the most superficial dirt and also give the appliance the possibility to clean and sterilize at high temperatures all the dishes that you are going to use for the following meal. And let's not forget that you will consume much less water!