Things That Should Stay Out of Your Dishwasher

When you have a pile of dishes, you’re likely to be glad to have a dishwasher in your kitchen. These appliances are fantastic time savers, but this doesn’t mean that everything can be put into your dishwasher. There are a number of items that can be damaged or cause damage when placed in your dishwasher. So, here we’ll explore the things that should stay out of your dishwasher.

Image of an open dishwasher

Wooden Items

The heat and hot water temperatures can cause your wooden items to bend out of shape and warp. Additionally, hot water can alter the finish of your wooden items, dulling the look of your utensils, cutting boards and bowls. So, to maintain the function and beauty of these items, be sure to hand wash and allow them to air dry.


Vintage cups, plates and other items can be a fantastic feature in the kitchen, but it is best to keep these items out of your dishwasher. Detailed patterns, colors and gold trim from antique or vintage pieces can all be faded. Additionally, dishwasher detergent can be very harsh on your vintage ware. To maintain the value and beautiful finish of your vintage items. However, although porcelain and ceramic may appear vintage, unless it is hand painted, they are usually safe in your dishwasher.


Crystal items should always be washed by hand. The intense heat and hot water can crack, chip or break your fragile crystal. So, take the time to wash your crystal glasses and dishes lightly by hand.


Copper pans and pits should also be kept out of your dishwasher. The finish can be tarnished by the conditions inside your dishwasher, so it is better to hand wash using mild soap.

Cast Iron Skillets

Cast iron skillets can mean the difference between a nice dinner and a spectacular dish, but all of that seasoning can be ruined by putting your skillet in the dishwasher. Additionally, running your skillet through a dishwasher program puts it at risk of rust.  Clean your skillet without soap, washing by hand and dry it immediately using a soft cloth for a great finish.

Insulated Flasks and Mugs

An insulated mug or flask is a great way to enjoy a hot drink on the go, but you can ruin this potential to keep your drinks chilled or hot by putting it in the dishwasher. Most insulated flasks and mugs have an outer and inner layer, but the space between can fill with water during a wash cycle, compromising the insulating effect.

Nonstick Items

Whether you have pans, cookie sheets or other nonstick items, you need to take care when washing. Some brands of nonstick items are dishwasher safe, while others are not. So, it is crucial to read the manufacturer instructions before you consider putting a piece in the dishwasher. If your item is not dishwasher safe, you risk ruining the nonstick coating forever.

Graters and Sieves

Graters and sieves have small holes that are used for zesting or catching those small particles. Unfortunately, these small holes can be easily plugged by particles floating around inside your dishwasher during a wash cycle. So, while all your other items may come out clean, your sieve or grater will have acted like a magnet, drawing all those icky food particles to it. These items are best cleaned by using a soft bristle brush and warm water. While this is an unpleasant chore, it is worth taking a little time to clean these delicate items.

If you suspect that your dishwasher has been damaged by washing an unsuitable item, you can rely on a professional home appliance technician for practical help and guidance.

For help with any appliance repair issue, be sure to speak to a professional appliance repair service.