A dishwasher may be too rough for some of your most prized kitchen items. That’s why we’ve compiled a list of dishwasher Do’s and Don’ts. So follow these simple guidelines before you toss everything but the kitchen sink into your dishwasher.
Check For Labels.
First, look for a dishwasher-safe stamp or label on the item in question. Most pots and pans have an engraving on the handle, while most dishes are labeled on the bottom side. For example, stainless steel is dishwasher safe, aluminum is not. If you have trouble locating a label and are unsure what material is made of, check the original packaging or the manufacture’s website.
There are some items that should never be put in the dishwasher:
Dishwashing Cast Iron
Washing cast iron inside a dishwasher will lose its seasoning and cause rusting.

Dishwashing Wood
The heat and humidity inside dishwashers can cause wood to warp and crack.
Dishwashing China And Delicate Crystal Glassware
The intense heat of a dishwasher might be too much for your delicate crystal to handle.

Dishwashing Insulated Travel Mugs
Putting your favorite travel mug into the dishwasher may ruin its vacuum seal and ability to retain heat.
Dishwashing Aluminum
Not only is aluminum prone to scratching inside a dishwasher, it can develop a dull finish over time.

Dishwashing Non-stick Pans
Many non-stick pans these days are dishwasher safe. Please refer to the package instructions or visit the manufacturer’s website to determine if your non-stick pan is dishwasher safe. If you are still unsure, we recommend washing by hand. Frequent washing of non-stick pans at high temperatures in the dishwasher can cause the coating to wear out.
DIY Dishware
Homemade things are precious, don’t risk damaging them.
If you’re still unclear, wash it by hand with Dawn. It’s better to be dishwasher safe, than sorry.