Have you ever taken a really good look at your dishwasher door? I have. YUCK! On a very regular basis I scrupulously clean that thing because it grosses me out that my dishes would come out of something that has such nasty gunk stuck in the crevices. Take a look at this:
This is with regular cleanings, too, so if you've never done it, you might want to look at your dishwasher door. And the absolute best tool for this job? A toothpick! Just slide it along the crevices (using new ones as you need to, of course!) and it will pull all that yuck right out. Then spray a little vinegar into it, pour a cup of vinegar into your empty dishwasher, and run a normal wash cycle with no dishes inside. Your dishwasher will be sparkling and fresh again! You'll thank me for this disgusting post, I promise... Now get to it!