On Wed, 27 Feb 2013 06:27:04 -0800, "William Sommerwerck"
wrote:

I wash them in the dishwasher and they come out clean,
but once in the basement again, after a few months,
you notice that the same ones have mold. And the rest
never get mold.

I'm wondering whether it's plasticizer migrating to the surface.

You might try putting the "susceptible" items in plastic bags and sealing them
tightly. I wouldn't be surprised if the "mold" continues to form.

So you mean clean them first and then do this? OKay, I'll try it.
It will take a few days at least to start the test and up to a month
or three to wait for resutls, but I'll get back to you. At least I
sincerely plan to.

Thanks to both of you and all of you.