yeah just distilled water.
Beads are nice but I have started to keep a couple of these in my desk top.
http://www.bovedapacks.com/products....Boveda%20Packs
65% and they work flawlessly.
I've moved my beads to the cooler with my jel jars.
For Tupperware, I'd toss in two. You can probably get them at your local B&M.
Also a lot of manufacturer's put these in their boxes (some are moving away from the added expense though) so if you go in and buy a bunch of sticks at your local and ask real nice they might throw in a couple.
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