If you go to an RV supply place, they have plastic bowl type deals with about 1 pound refill bags. they have a cup just the right size underneath that catches the moisture, then you just dump and refill. The underneath is just the right size so that it is just full when you run out of crystals. Real easy because you can watch and see when you need to put new.get some silica crystals they adsorb mositure (the ones in a shoe box that say do not eat ) you can get bulk bags and just pop in oven to remove moisture and reuse