I’ve had a lot of experience with vape cartridges, and I can relate to wondering how long they last. From my experience, it really depends on your usage. A typical vape cart can last a few days to a couple of weeks. I’ve also used disposable cart weed and found they’re pretty convenient since they’re ready to go and don’t need refilling. If you find an old cart in a drawer, just check the oil for any changes in color or consistency before using it. It’s usually still good if it’s been stored properly.