How do I properly dispose of my used blu Tank™ unit? February 03, 2020 10:04 Updated Simply unscrew the empty landfill-safe blu Tank™ from the battery, and throw it away. Related articles Where are your blu Tank™ systems made? Can I make my own e-liquid and use it with blu Tank™ systems? Can my blu Tank™ unit leak during an airplane flight? Can I refill my blu Tank™ unit? Can I return a defective charger?