I use it (CS a couple of oz) in my Humidifier all Winter long.
It holds about 5 gallons, I just pour some in each time I fill the 2  jugs.
it keeps the tank from growing any thing, I do not clean tank till end of  
season use.
If I want CS in air I put it in my nebulizer. 
When I have any thing in my chest usually 1 session of 10 minutes knocks it  
out.
I only change my media pad in humidifier when it gets too crusted with  
minerals to work
(about every month or so) when Humidifier will not keep up. I have a  
humidifier on furnace but prefer 
the consol one. I can get the humidity to where ever I want in the house. 
Bob

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