It's safe and efficient to wash most of your dirty dishes in the dishwasher, but bear in mind that many kitchen tools and serving pieces should never be placed in the machine. If in doubt, keep it out! Everything on this list from "Martha Stewart's Homekeeping Handbook" should be washed by hand, at all times:

May 11, 2015
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Adhesive-joined pieces

Aluminum, including anodized aluminum


Blown glass



Cast iron

China with metallic decoration


Disposable plastics not labeled "dishwasher-safe"

Flatware with bone, plastic, or wood inlays or handles

Gold-plated flatware



Many nonstick pots and pans (check manufacturer's instructions first)

Milk glass


Rubber tools


Wooden spoons

Here are a few more dishwasher "don'ts" to remember:

Don't spill dishwasher detergent on flatware; it can cause dark spots.

Don't use detergents containing chlorine, to avoid the release of chlorine fumes in the kitchen while running the dishwasher.

Don't jam too many pieces into the silverware basket overcrowding can cause items to become scratched.

Don't mix sterling or silver-plate and stainless-steel flatware in the dishwasher, even when using the Rinse-Hold cycle. If the metals come in contact with each other, a reaction between the two metals can damage both finishes. (Since most knives, including sterling ones, have stainless-steel blades, keep them away from other silver pieces, too.)

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