Quote:
Originally Posted by onwebcam
Doesn't the cap being on the bottle sort of rule out it being an air freshener in the vent?
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No, that's how it's done. It's very common, the oil leaks out throgh the unglazed ceramic just enough where it's released slowly over time and doesn't evaporate too quickly. This really is very common stuff depending on what circles you hang out in. Go to any headshop and you'll see this everywhere.