Adding bleach to dishwasher soap
Maybe a good first question is: is it safe? For example chlorine bleach and ammonia produce toxic fumes (HCL?).
In any case, I have noticed of late (I don't know why just now and not years ago - maybe because I have a new dishwasher) that even clear glass mugs that get a talon(?) stain on them from having black tea cooked in them using a microwave do not come clean in my dishwasher. Yet, if I take the same glass/mug and spray it with Clorox Clean-Up and just fill the glass with clear water that the stains come off of the glass - not rubbing (elbow grease) required. The same is true for "plastic" mugs and glasses.
Tonight I put a few ounces of bleach in my dishwasher after it had gone through the wash cycle, but still had a couple of rinse cycles to go. I didn't put any test items in the dishwasher, but I will inspect all items when the job is complete to see if I can detect any improvement in cleaning.
Maybe some of the commercial dishwasher soaps have bleach in them. I am using Finish or similar at the moment, using the powder not the tablets.