Many of my friends complain about odor in their front load machines.  They also lament about spending money for "machine cleaners".  I never have had a problem with machine odor.  It's because I always use bleach when washing my white clothes.  I get beautifully white clothes and never any machine odor.  And I don't hae to waste a wash cycle just to clean my machine!  My friend Cathy tried it and after 3 months still no machine odor.