Identifying the inner liner
A metal ring is used to secure your bin liners invisibly. The process is the same whether your trash can liner is round, as in the video, or rectangular. (Be careful not to throw it out when you take out the trash!)
Wrap the liner around the metal ring
Simply wrap whatever liner you choose to use around the metal ring, allowing a small amount of the top of the liner to remain wrapped over the ring.
Replace the lid
Just replace the lid and you're all set.