@CzechCzar No mixing and yes keep menthol’s separate. If you insist on keeping snuff in the original tins put each one in a separate zip lock baggie. If you plan on creating a large collection 100 plus snuffs invest in 2 ounce glass jars. Just empty the snuff into a jar and label it or remove label and stick it to the jar. Baby food jars work well. or you can purchase small jelly jars.