Should I wash newly bought plastic tumblers? Just bought these cups from IKEA.



Beside from being dusty, I asked myself whether I should put these once before usage into the dishwasher to "wash away toxics" that might be on the surface of the cups.

On the other hand, this might be pure superstition.

My question:

Should I dishwash plastic cups/plates before first use?
Generally, yes, to wash off any chemicals that might have been used to finish the plastics or rinse any sprue away. If you're going to be putting the dishwasher on anyway, you might as well throw them in.