☆.A.
Our "appliance elf" told us a few things that really helped:
*Do not RINSE dishes. The detergent needs "something" to "work on" so scrape, but don't rinse.
*Start with a clean dishwasher -- use a cleaner that you buy or run a load with 2 cups of white vinegar
*Never use liquid or gel in your dishwasher--only powder (opposite of washing machines)
*Don't add any extra. The small pre-measured packets are the best way to do this, if, like me, you tend to add a little extra "shot" for "good measure"!
Good luck!