This is my embarrassing before picture. We have really hard water here, and apparently the drying agent I have been adding to my dishwasher isn't doing that great of a job. Anyway, I cleaned out the filters on the dishwasher. Luckily nothing too gross here, but I did find a couple of shards of glass from a drinking glass that had broken in there awhile ago.
Then I gave all the areas that are closed up during the washing process a good scrub. (i.e. the spaces the door covers when it closes, but the water doesn't get to while it is washing dishes.) I had to use a toothpick to get some of the gunk out of the corners on the bottom ledge.
I then scrubbed the inside ledges on the door.
I read quite a few different methods for cleaning the inside of the dishwasher, and finally decided to combine two of the ones that I liked best. First, I added two tablespoons of citric acid to the detergent cup. (I get citric acid at a health food store, but if you can't find it, some tutorials on pinterest were saying you can use tang or lemon Kool Aid powder because they contain citric acid.)
While it was running, I gave the outside of the dishwasher a good cleaning.
And remember that old crusty detergent cup? Much better!!
I will now be adding "clean the dishwasher - inside and out" to my quarterly cleaning list.