R-Octenol's shelf life is several years. Closed drop bottle is completely odorless and can be stored together with other home chemicals. Keep out of reach of children. Remember to fill the cartridge before use!

Octenol cartridge refilling.
  1. Attach the blunt needle tip onto the syringe.
  2. Insert the tip of the syringe into the dropper tip.
  3. Turn the dropper bottle around and pull 1-2 ml of r-octenol into the syringe.
  4. Put the cartridge on the table.
  5. Empty the contents of the syringe slowly into the cartridge.
  6. Please wait while for the liquid to absorb into cartridge.
  7. The cartridge is ready for use as new.
  8. Repeat filling every 3-5 weeks.