I am more or less neutral on this product - it works but not very well, and it is really not a very good value. Perhaps the hard water in my house causes it to perform poorly, but nonetheless poorly it performs. It has to be used after every shower in order to have any effectiveness whatsoever, and that is rather paltry, as I still have to scrub the tub on a regular basis - cutting down on the frequency of which was my main motivation in purchasing this cleaner, and it has not done me that favor. I will give it recognition for keeping the grime from sticking to tub, tile, fixtures, and curtain as badly as they would otherwise, but I really feel that this benefit is negligible. While I won't ever use a chemical-/synthetic-based shower cleaner just to make my job easier, I will definitely not buy this products again.
Its been hard to tell if this product is working. It must be working somewhat because the mildew has kept away. It's drawback is it does not do much for for the hard water areas.
This product is really a shower maintainer. It keeps the place from getting haywire. It just doesn't clean like it promises.