Product review (4 stars): As good as detergent. A skeptic's review.
When I first saw this I figured the 20 reviews were probably written by the employees of the company that produces it.  I am a scientist and really need proof to believe that something works. We install this right before we started potty training our two-year-old. I waited this long, a couple months, to be able to give a truthful review. This is as good as detergent. I wouldn't say one is better than the other but our stuff is odor free and white when it should be. We have thrown in training underpants and reusable diapers. They come out clean. We had catch up staying a shirt and had to add shout prewash to it. We also had the ubiquitous urine coated towels as a result of potty training. Those we did add some detergent to because they didn't come out perfectly clean the first wash. But 95% of time we don't use detergent.