Back before I got my VS water tight I had the same problem everyone else did (except maybe lucky IM owners) and that was a musty smell from sitting in a garage over the winter. I found a product that does wonders and I never have a musty odor in my car anymore---it's always fresh and dry.
The product is named "DampRid" ---some white granules in a quart-sized plastic container that soaks up any moisture for 45 days and at about $4.00 per container it's quite a bargain.
I got mine off the internet after googling it and I heard that WalMart also sells it. This might be the only non-Chinese product sold in WallyWorld.
---I hope this helps those of you who have a need for some way to keep that car interior dry and fresh..
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