As a whole, NaturalChemistry products are not snakeoil. They do work as claimed but they are either:

1) very expensive such as their ascorbic acid stain remover,their proprietary salt mix that contains borax and cya, and their liquid stabilizer

2) not normally needed the vast majority of the time like their phosphate removers and enzymes (EVEN WHEN PHOSPHATE LEVELS ARE IN EXCESS OF 3000PPB!)

3) not the most effective like their EDTA based metal sequestrant that does not add phosphates (see #2 above!). HEDP is a much more effetive sequestrant (as found in most of the metal sequestrants on the market) but does break down into orthophosphates (Once again see #2 above!)