You are currently viewing What Are the Items You Cannot Clean With A Dishwasher?

What Are the Items You Cannot Clean With A Dishwasher?

When it comes to doing the dishes, there are some things that you should never put in the dishwasher. Dishes like cast iron pans, nonstick cookware, and certain types of glassware can be damaged by the heat and detergents used in dishwashers.

If you’re unsure whether something is dishwasher-safe, it’s always best to err on caution and hand wash it instead. With a little care and attention, your dishes will last much longer.

Here are items that should not be put in the dishwasher, and where can you go for a dishwasher repair in Byron: 


Remember that most clear plastic will become dull and ruined if you put it in the dishwasher. Take into account running your plastic garments through the dishwasher. 

Some softer plastics won’t hold up to the machine’s heat. This makes the top rack of the washer, which is furthest from the heat, the ideal location for the items.

Cast-Iron Frying Pans

It takes some time to season the cast iron just right, so please don’t ruin it by cleaning it quickly in the dishwasher. It may cause rust to form as well. Instead of using dish soap, which might erode the flavour, ensure the dish is completely dry using a towel. 

The best way to clean cast iron is to rinse it in hot water while using a soft sponge to scrub off any food stuck in the pan.


Cutting boards, knives with wooden handles, and wooden tools like spoons and spatulas are what we’re talking about here. After usage, cutting boards should be rinsed and hand washed as soon as possible, but not for too long. 

Dishwasher detergent may be abrasive, which will eventually cause damage to your wooden objects. During the drying process, heat can also cause the wood to warp or even break. A fast tip: Stains can be removed by scraping with baking soda.

Kitchen Knife 

Never use the dishwasher to clean your expensive knives. Using dishwasher detergent will cause knife blades to grow dull. When it’s time to start cooking, you’ll become upset about slicing and dicing. It also gets dangerous because a dull knife is more likely to slip from your fingers.

Instead, you can use soapy water and a cloth to clean your kitchen knives properly.

Plate Made of Fine China, Crystal, or Painted

You don’t want to scuff the heirloom your grandma left you or the exquisite plates you bought from an antique store. These delicate kitchenware items could chip, fade, or lose their sheen in the dishwasher.

Keep any flatware with oddly carved handles, such as antler or bone handles, out of the dishwasher. Heat and hot water will cause the handles to loosen up.

Pressure Cooker Covers

In theory, you can wash the top of your Instant Pot in the dishwasher. It is not the best cleaning option because the cover of a pressure cooker comprises several essential parts.

For instance, dishwashing detergents can damage seals, and some valves may become clogged with food debris, both of which can shorten the lifespan of your appliance. If this happens, you need to contact an appliance repair specialist. 

Items with Adhesives or Labels

If you’ve ever put a container in the dishwasher while the label was still on, you know that the label almost always comes out in a shredded, soggy mess. The hot water will obliterate the label, and any pieces that flake off could block your dishwasher’s filter.


It is important to know what items are safe to put in the dishwasher and what are not. Some items, such as aluminium foil and cast iron pans, can damage the dishwasher or cause it to break. Other items, such as plastic and nonstick cookware, should not be put in the dishwasher because they can melt or warp. If your dishwasher is broken, you can also opt to hire an appliance repair in Byron. 

Clarkes Appliance Maintenance offers repair services for various appliances, including washers, dryers, and similar models. Get in touch with us immediately if you need appliance repair services in Northern Rivers. Contact us for a dishwasher repair in Byron!

Leave a Reply