Product review (5 stars): Did the trick...
I have a relatively new dishwasher but it is used heavily.  The tines on the rack have started to rust badly.  Don't bother trying too buy a new rack... outrageous prices.  I thought I would give this a try.  Easy to use...prep rusted areas, shake the container and paint.  This is similar to car touch up paint but plastic formula.  After 2 loads of dishes the rack still looks like new.