I love my white corian sink, but as time goes by, it gets stained more often and is harder to get white. I use Soft Scrub and let it stay on to bleach the sink, and sometimes use Bartender's Friend on tougher stains. Does the sink need to be sealed to bring it back to its original state so it won't stain so easily? If so, where/how do I find the sealant?
Thanks.