Final answer:
Scraping dishes with a rubber spatula before placing them in the dishwasher can help keep the appliance clean longer. This prevents food particles from clogging filters and allows the dishwasher detergent to work more effectively. Proper detergent use and avoiding certain materials also contribute to a clean dishwasher.
Step-by-step explanation:
To keep a dishwasher clean for a longer period, it is effective to scrape off leftover food from dishes before placing them in the machine. Dishwasher detergents are formulated to work best on surfaces where food particles have been minimized. This practice reduces the risk of food particles clogging the dishwasher's filters or spray arms, ensuring more efficient cleaning cycles and maintaining the dishwasher's cleanliness and functionality over time.
Using a rubber spatula is a recommended tool for pre-cleaning dishes because it can effectively remove food without damaging dishes. Moreover, making sure to use the correct dishwasher detergent and avoiding materials incompatible with dishwasher detergents can also prolong the cleanliness of both your dishes and the dishwasher. Some materials that should not be washed in the dishwasher include silver, brass, cast iron, bronze, aluminum, pewter, and gold leaf, as the chemicals can damage these items.
While sponges can be economical and safe for cleaning kitchen surfaces, scraping dishes with a spatula before using the dishwasher is more advantageous for the appliance's upkeep. The use of detergent specifically designed for dishwashers, as opposed to hand dishwashing liquids, further supports the proper function of the dishwasher and ensures that dishes come out clean and residue-free.