Hello A.,
We have also gone through this issue and I can tell you from my experiences there are a number of things to consider:
1.) We cleaned out the filter and ran a "Vinegar Cycle" which loosened up hard water deposits (like lime). This process needed to be repeated more than a couple times to get back to square one.
2.) When the dishwasher was "clean", we found in order to optimize the performance moving forward we needed to have "softer water". We got a water softner.
3.) We also found were using too much Dishwasher Soap (gel) at that time... Cut down on the amount of soap being used.
4.) After finding out all four of our family members in the house are Asthmatic we decided to "GO GREEN" and started with Seventh Generation dishwasher powder. We found we were constantly left with undesolved grains and unclean dishes (very disappointed).
5.) We switched to ALL NATURAL Shaklee Dishwasher soap and LOVE IT! We decided to switch to all of our cleaners to the Shaklee 'Get Clean' line and haven't look back.
You'd have to spend more than $3,400 to get the same amount of clean found in the Get Clean Starter Kit! (for less than $150.00 (MN SRP)). Give it a look: http://togethergreen.myshaklee.com/us/en/products.php?sku...
Best wishes,
S.-