Product review (5 stars): Really works as advertised!
This product did what it advertised.  I'd buy it again if I needed to.  Please follow the instructions.  It is very thick so don't worry about that, if you think something's wrong, it's not.  I did a general dishwasher cleanup and this was the final touch.  For sure take the rack completely out of the dishwasher and get it in good light to see how much exposed metal you have.  It truly covered my exposed posts (I had about 6).  Look carefully and don't miss any exposed metal -- while you're at it you might as well do a thorough job!  Highly recommend.