storage question

Being a new pipe smoker myself I personally only have 2 tins a a small mason jar (i think thats what its called its the kind with a gasket and a latch.) I wanted to ask if the humidity disks for pipe toback is only for when you have it in a pouch correct? I think i am keeping my stuff right but I should get some more of those jars. Personally I have trouble opening up tins they seal up TIGHT and would prefer them in jars.