I've tried many different methods of ridding my plastics and Tupperware of oily residue left behind after washing in the dishwasher. I've tried every rinse aid on the market, vinegar, several recipes of homemade dishwasher detergent, the hottest sanitize setting, and ammonia. I've also taken my dishwasher apart and cleaned the components thoroughly. But after only a few wash cycles, the oily residue was back. I needed something made for cutting grease. I just happened to have some Fantastic Antibacterial Heavy Duty Cleaner on hand and tried it. Wow!...It worked! I also had a problem with white chalky residue left on my dishes, which was attributed to cheap detergent (great value, cascade gel, etc). I tried Ajax dish packs, and I now have no more chalky residue either.
I put the Fantastic in a squirt bottle and squeeze approximately 1/4 cup into the bottom of my dishwasher, throw in a dish pack, and start a normal wash.
Dishes and plastics are clean and spotless!
+ 
= Super Clean Dishes
In no way have I been compensated by either company to endorse their product. I simply found something that works and wanted to share it.
