The more frequently a Delta-8 cartridge is used, the quicker it will run out of vape oil. So there will come a time when your Delta-8 cart needs to be refilled or replaced. There are different types of Delta-8 cartridges. Some Delta-8 carts are refillable and some are disposable. Refillable Delta-8 cartridges require additional vape oil to refill the emptied cartridge. A Delta-8 disposable cart is designed to be used one time. Once a Delta-8 disposable cart is emptied, another device must be purchased to continue enjoying D8. In general, Delta-8 carts can be used for a week or so, or even months depending on the user.