Is Plastic Cups dishwasher safe?
Sometimes — with care
Plastic cups are conditionally dishwasher safe.
Why
Most plastic cups are dishwasher safe if placed on the top rack away from the heating element, but thin or low-quality plastics may warp or degrade under high heat. Always check the manufacturer's label for specific temperature limits.
How to wash it
Place on the top rack of the dishwasher, use a low-heat or air-dry cycle, and avoid abrasive detergents. For hand washing, use warm soapy water and a soft sponge.
Last updated 2026-06-16. General guidance — always check your product’s care label. How we verify.