What happens to very old money/bills? Do they just get used until the last person gets it and it eventually disintegrates?

Question

What happens to very old money/bills? Do they just get used until the last person gets it and it eventually disintegrates?

In: Other

Answer 1

I did a tour! Federal reserve bank-

When the money comes in , they have these huge machines that count and sort the money. If there is any problem with the bill, the machine automatically removes and destroys the bill, and accounts for it.

The 3 foot by 3 foot cubes with like 5Million bucks in them were cool to see… but the automated counting/sorting/destroying machines were impressive to see in action.