18 Things You Should Never Put in the Dishwasher (Even If You’re Tempted)

wear away after repeated dishwasher exposure.

This includes:

  • gold trim
  • silver trim
  • metallic painted accents

Even if the dish itself survives, the decoration may not.

12. Insulated Travel Mugs

Some insulated mugs are dishwasher-safe, but many are not.

High temperatures and water pressure can damage the vacuum seal between the walls.

Once the seal is compromised, the mug may no longer keep drinks hot or cold effectively.

Always check the manufacturer’s care instructions.

13. Vacuum-Sealed Containers

The same warning applies to some vacuum-insulated bottles, food jars, and thermoses.

Dishwasher heat