It's not a bad idea, to keep it clean. Especially if there will be any light where you store it.
You can use a carbon filter, or just let the container sit open for a day or two to get rid of the chlorine when you use it, if you want: It's really a small amount.
Emergency Medicine - saving the world from themselves, one at a time. "Thou shalt not be a victim, thou shalt not be a perpetrator, but, above all, thou shalt not be a bystander." I make the ADL soil themselves. And that makes me very happy 
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