I need to remove rust from a soap dispenser on the solid surface counter top in a bathroom. It is white and builder stock, not an expensive Corian product. We are moving from a rental home.
Has anyone done this successfully?
Thanks,
Phoenixsgrany

Oxalic acid found in Zud clenser or a rust removal product designed for clothes. See local hardware store.

In addition to what has been said, a green Scotch Brite pad or some soft scrub should take almost any "stain" out of Corian. A true stain is something absorbed into the material and this usually does not happen with Corian. It takes some powerful chemicals to stain Corian. Even then they can usually be abraided off.