Many hardcore snuff folks will recommend using ball jars as you would for pipe tobacco. But, I'll be quite honest, I just put the lid on and throw them in my desk. I don't have the palate JimInks has, and for my money they remain just fine over time. And yes, I have some open tins that are 10+ years old and they still seem just fine to me. YMMV. The only problem with my method with extremely moist snuffs is that they will dry out, but a moistened paper towel put over the container then held in place by the lid overnight solves this issue.