That’s a great question. I don’t know the answer, but my logic brain says they’d prefer some air exchange. After all they are alive and breathing even though severed from their host. I’m interested in trying even though I don’t have a vac sealer. And I’d assume you wouldn’t want to back them so tight they’re compressed in there, by maybe. All things worthy of some testing.
Check out this thread @Star_Dog. @Naptown916 has been doing some cool trials for longevity in the fridge. I’m thinking 
I could use his dip in alcohol, soak in 10% bleach, rinse then send in an envelope and it may prevent unwanted pests(mold, bacteria, etc).
Thanks for your input folks. I love this place! 
