Kosher salt with some water to make a thin paste. Don't leave them in your basement refrigerator and forget about them though.... Your wife will be pissed if you do. Trust me.
That reminds me. My grandparents were up to visit for mothers day and we picked up sandworms for my grandfather... that are still in the fridge. I gotta remember tonight cause if she finds them first
In the salt paste laid flat in a tupperware container in the fridge. I think laying them flat works better than all wrinkled up in a baggy. If they get dry , they tend to crack and with too many holes or tears , they don't work well.
He that would make his own liberty secure, must guard even his enemy from oppression; for if he violates this duty, he establishes a precedent that will reach to himself.
Thomas Paine