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What not to put in the dishwasher: materials and appliances will be damaged
Do not wash this in the dishwasher. Source: treehugger.com
Using a dishwasher saves a lot of time. You don't have to stand over the sink for a long time and rub plates, pots, and cups - the appliance will do it all for you. But it's worth remembering that not all materials are suitable for dishwashers.
The FoodOboz editorial team will tell you what not to wash in the dishwasher. The dishes that you want to clean from dirt will simply deteriorate.
Wood utensils: spatulas, spoons and boards
A single dishwasher cycle can take more than an hour. For wood, this is quite a long time because the material swells when it is exposed to water for a long time. Then, when exposed to hot air, the material dries out and cracks and can even warp.
Aluminum cookware
Aluminum starts to oxidize when washed in the dishwasher. As a result, the rest of the dishes in the unit and the machine itself become covered with a black coating. In addition, the nozzles can even become clogged, which can lead to breakdowns.
Silverware
As with aluminum, silver is affected by aggressive detergents used in the dishwasher. The dishes will simply darken.
Cookware made of cast iron
Cast iron should only be washed by hand. This is a very specific type of cookware that forms a protective film after cooking. It should not be washed off in the dishwasher because it will rust.
Cutting utensils: knives and graters
Hand wash all food cutting utensils as well. They will become dull in the dishwasher and will no longer be useful in the kitchen.
Teflon-coated cookware
Dishwasher detergents destroy the Teflon coating on cookware. In this case, it is better to use a simple sink.
Crystal crockery
Crystal should also not be washed in the dishwasher. Sparkling salad bowls, glasses and goblets will simply tarnish in this technique.
Thermoses
If the packaging in which you purchased the thermos does not have a dishwasher label, it is not suitable for use in a dishwasher. The dishwasher can ruin the vacuum in the thermos and it will not retain heat.