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