When buying used hobby items you can never be sure where they have been or what they have had done to them.
My most recent hobby purchase was a kids castle at the swap meet.
It was a Disney toy and it was very dirty. It had lots of nooks and crannies in it. Too many to adequately clean by hand.
So I opened it up and tossed it into the dishwasher. Alone, with no soap, on the lowest heat setting, China, and ran it one cycle.
Then I laid it out on a puppy pad to dry, it was much cleaner!
No damage, nothing warped, and yet, all clean. Now to disassemble it and remove the wiring and begin the repainting process.