and you can go one further if you like.

You may have noticed in your local shops or on line that some vendors are selling humidifier solutions or liquids pre-bottled.

These solutions are merely distilled water mixed 50 / 50 with propylene glycol. Propylene glycol or "PG" can be purchased at most any drug store. You may have to request a special order. Ask the pharmacist.

PG when mixed with water and added to most humidifier elements has the ability to release water for humidification when rh drops below 70% and actually absorb humidity when it goes above 70%. It does this by forming a bubble of PG in your humidifier's element enclosing water in it. When the rh goes below 70% it allows water to the surface to evaporate and when the rh goes above 70% it takes it back in.

PG is odorless and tasteless and is commonly used in the food industry as a preservative. Used in a humidifier it is inert and harmless to your smokes although you don't want to spill it on your cigars. You shouldn't drink it either! Remember, mix it 50 / 50 with distilled water to use in your humidifier.

As Roham mentioned, the humidifier beads work very well too. You can actually buy specific formulations to maintain either 65% or 70% rh. The brand name of the beads is Climmax Premier. Yes....two m's in CliMMax.

Of course none of this means that you have to have PG or beads. Straight distilled water may work for you just as it is. Give it a try and see how it goes.