Can someone who is a regular here summarize?
Sure since I started this thread. I was using Rezblock, very expensive, and by tasting some I realized it was cranberry extract after mistaking it for black cherry. I had just been reading a new study that showed that Proanthocyanidins in the cranberries was what gave them the bio-slipperyness to wash away urinary tract infections. The flavinoids/polyphenols make it so the bad guys can't stick and they get flushed away. Its this same action that prevents resin from sticking to your glass.
That's when I started experimenting with cranberry extract as that is way less expensive than Rezblock. You want to find one with no alcohol and no cranberry juice as that has sugar and is not concentrated.
So I found Botanic's Choice, I can't remember who found the Nature's Answer, but they both do a great job and are way less costly than Rezblock. I think some people remarked that Nature's Answer had less particles in it but either one will work well.
As far as cleaning I started a thread on PBW
here. Its what brewers use to clean burnt malt off their brew kettles. It is actually good for the environment as it puts oxygen back into the water when it goes down the drain and helps with hard water problems. It is powerful and works very well. Some people derailed my thread talking about Alconix and other cleaners for laboratory glass. These work well but are expensive and not eco-friendly.
There is a brother to PBW that's called Straight-A, pretty much the same. Both PBW and Straight-A are kinda mixtures of Oxyclean and TSP (trisodium phosphate) substitute. There is an excellent article from the makers of Straight-A and One Step that describes soil formation, chemistry in cleaning, the cleaning pie chart, wetting, deflocculation, suspension, dissolution, emulsification, neutralization, and oxidation. I highly recommend reading it as it was the central document in my research.
So try a little PBW, please use it sparingly, dissolve in warm to hot water, and keep your dwell times short, and try one of the recommended cranberry extracts and I think you will happy with the results.
Edit: Please be aware that PBW and Straight-A technically are not sanitizers, that is what One Step is about.
http://www.ecologiccleansers.com/essentials.php
http://fuckcombustion.com/threads/pbw-the-chemistry-of-clean.7854/