How was your experience with it? Sounds too good to be true. Why would keepers continue to apply dangerous chemical treatments if all you have to do is salt on predatory mites? Their website says that they are best used as a preventative solution.
The best defence against anything is always preventive measures, I had two snakes I rescued at one point that both came with mites had them segregated for 3 weeks and used them they was fine after this time.