Product review (5 stars): It Works!
This is a great product.  Easy to apply, once rust has been removed from the dishrack.  Lasts forever (well, as long as we have had applied it to our 15-year old dishwasher.)  This is an inexpensive way to resolve the problem of rust marks on dishes caused by a worn dishrack.  Replacement dishracks are priced well over $100, even if you can find one.