Using a dishwasher can save you time and effort when cleaning up, but not everything is safe to put inside. Some items can get damaged or cause problems for your machine. Knowing what to avoid can help you protect both your belongings and your dishwasher.
Understanding which items should never go in the dishwasher helps you avoid costly damage and keeps your kitchen tools in good condition. By choosing the right cleaning method, you’ll make sure your utensils and cookware last longer.
Wooden cutting boards
You should never put wooden cutting boards in the dishwasher. The high heat and moisture can cause the wood to warp and crack over time.
Dishwashers can also weaken the structure of your board by soaking it in water for too long. Instead, wash your wooden board by hand with mild soap and warm water.
To keep it in good shape, regularly treat your board with mineral oil or a plant-based wood wax. This helps protect and extend its life.
Cast iron skillets
You should never put your cast iron skillet in the dishwasher. The harsh detergents and water strip away the seasoning that protects your pan and keeps food from sticking.
Dishwashers can also cause the skillet to rust quickly. Instead, wash it by hand with warm water and a brush, then dry it thoroughly and apply a light coat of oil to maintain the seasoning.
Sharp kitchen knives
You should avoid putting sharp kitchen knives in the dishwasher. The heat and moisture can dull the blades over time.
Dishwasher detergent and movement can also cause the knives to bump into other items, which may damage the edge.
Hand washing your knives with mild soap and drying them immediately helps keep them sharp and in good condition longer.
Nonstick cookware
You might think dishwashers are perfect for quick cleaning, but nonstick cookware doesn’t always agree. The harsh detergents and high heat can slowly wear down the nonstick coating.
Over time, this can reduce the effectiveness of your pans and even cause peeling. To keep your nonstick cookware in good shape, washing by hand with gentle soap is the safer choice. Your pans will last longer and stay easy to cook with.
Crystal glassware
You should avoid putting crystal glassware in the dishwasher. The high temperatures and strong detergents can cause it to become cloudy or damaged.
Washing crystal by hand helps preserve its shine and clarity. Use warm water and a mild detergent, and dry with a soft cloth to prevent spots.
Taking a little extra care with your crystal will keep it looking beautiful for special occasions.
Aluminum pots
You should avoid putting aluminum pots in the dishwasher. The detergent and high heat can cause discoloration and darkening on the surface.
Over time, aluminum may develop dull spots or pitting, which can affect how your pots look and perform. It’s best to hand wash them gently with mild soap and warm water instead. This helps keep your aluminum cookware in good shape for longer.
Insulated travel mugs
You might be tempted to toss your insulated travel mug in the dishwasher, but it’s usually best to avoid it. The high heat and water exposure can damage the airtight seal that keeps your drinks hot or cold.
When that seal breaks, your mug loses its insulation efficiency. Hand washing helps preserve your mug’s temperature control and extends its lifespan. If your mug says it’s dishwasher safe, double-check the manufacturer’s instructions before loading it in.
Plastic containers not marked dishwasher-safe
If your plastic containers aren’t labeled as dishwasher-safe, it’s best to avoid putting them in the dishwasher. Heat can cause thin or unmarked plastics to warp or melt, damaging both the container and your dishwasher.
When in doubt, hand wash these items with warm soapy water. This helps keep your containers in good shape and avoids any unexpected damage.
Baseball caps
You might think the dishwasher is an easy way to clean your baseball caps, but it can cause damage. The heat and water can fade colors and warp the shape of your hat.
If you do try the dishwasher, use a special cap frame to keep its form. Otherwise, it’s safer to hand wash your caps with gentle soap and cold water.
Electronic keyboards
You should never put electronic keyboards in the dishwasher. The water and heat can easily damage the internal components.
Even if your keyboard seems dirty, the dishwasher’s pressure and moisture can cause malfunctions or permanent failure.
If you want to clean your keyboard, wipe it gently with a damp cloth instead. Avoid getting any water inside to keep it safe.
Fine china with hand-painted details
You should avoid putting fine china with hand-painted details in the dishwasher. The heat and strong detergents can cause the paint to fade or peel over time.
If your china has gold or metallic trim, the dishwasher can dull or damage these delicate finishes. It’s best to wash these pieces gently by hand to keep them looking their best.
Hand-washing also helps prevent chipping and cracking that dishwashers can cause with the intense water pressure. Treat your cherished dishes with care to preserve their beauty.
Copper cookware
You should avoid putting copper cookware in the dishwasher. The heat and detergent can cause the copper to tarnish or dull over time.
Hand washing your copper pots and pans helps maintain their shine. Use gentle cleaners designed for copper to keep them looking their best.
This simple step will protect your cookware and extend its lifespan. Your copper pieces will thank you!
Vintage silverware
You should avoid putting vintage silverware in the dishwasher. The high heat and strong detergents can damage the delicate finish.
If your silverware touches stainless steel during washing, it may cause discoloration or tarnishing. Hand washing with mild soap and warm water is safer.
Taking care of your vintage pieces by hand helps preserve their appearance and value over time.
