I know you can buy single packets of Propel and various Lipton green teas for backpacking. My question is a little different than that.

I buy Gatorade in powdered form in the big, bulk cannister and use it up during the summer months while I'm working outside.
I also buy powdered Tang for use on our monthly campouts.

Has anyone used their vacuum sealer to package powdered drink mix? Quite often, the mix hardens up before I've used it all and I have to use a fork to scrape it out of the container and chop it up.
If I vacuum seal enough powder to mix up a couple of quarts, will it stay in its original consistency? Does this make sense what I'm try to say?

Anybody tried it?