Well, they say all their testers thought it worked as well as or better than Synthrapol, but my daughter and I tried it and it did not seem to work as well for us. We never had muddy tie-dye when we were using Synthrapol, but with did with the Dharma detergent. We tried a whole quart of it and it never seemed to quite do the job. It wasn't horrible; it didn't make the stuff unsellable, but it was a difference that was noticeable to obsessively picky people.

We should probably be less anal about it, but we've gone back to Synthrapol.