A: HUMI-CARE Cigar Juice can be used to re-charge your HUMI-CARE Crystal Gel Humidifiers. However, this is not necessary, as these crystals already contain a humidity-balancing solution of propylene glycol. Distilled water will do the job, and is less expensive. However, both options will work.
A: I'm not a chemist, so I'll explain this as best as possible. Most antifreeze uses Ethelyne Glycol, which is toxic. Some newer, ‘greener’ brands are using a propylene glycol blend as a non-toxic alternative. Propylene glycol is an organic compound which basically serves to stabilize water (through evaporation and/or freezing point). It is recognized as safe by the FDA and is very commonly used in many food, beverage, and oral pharmaceutical products as a preservative.