Product review (1 stars): Dishes always come out dirtier than they went in.
I have a one year old Bosch dishwasher.  For the last four months, dishes have come out dirtier than then went in.  The machine just takes whatever dirt is on the dishes and spreads it around and then bakes it one until everything is covered in a film of filth,  Bosch told us to try the following remedies:

1.  Use very little detergent.  I have done this.  It did not work.

2.  Do a vinegar cleanse on the hottest cycle.  I did, seven times.  No improvement.

3.  Check the spray arms for blockage.  We did find blockages, and cleared them, and it made no difference.

4.  Stop rinsing the dishes before putting them into the dishwasher.  We have done this.  It made everything worse.

The thing is a huge money- and time-suck.  I feel as though we spent a bunch of money on, and remodeled our kitchen to fit, a nearly brand-new machine that MAKES MORE WORK than if we just washed the dishes by hand in the first place.  I have spent the last four months bent over this machine, fiddling with it, trying to fix it, talking to Bosch, searching the internet for solutions, EVERY DAY, sometimes doing the same load over and over until EVERY DAY I finally give up and wash everything by hand.

Bosch's customer service, by the way?  SPECTACULARLY UNHELPFUL.