While we are on the subject, can you guys enlighten me as to why we should even bother with this stuff? I have 5 humidors and one has a PG jar (in a solid state, looks like jell-o) and I regularly add water too it. Anyway, The others use regular distilled water and the one I keep in my office, gets the old water fountain treatment. I notice no differences in any, with the exception that the humidor that has the pg dries up a lot quicker. I hear so much on this stuff and never understand why. bah humbug.