501 BLank Carts with my riva q?

[Zag]

Hey there,
Been using the riva for a few days now and was wondering how long the blank carts will last?
Don't see anything that would cause it to go bad.
Can't I just replace the foam and keep reusing them?

 

[Zag]

nevermind, actually after searching a while I found my answer.
On another note, I feel a little silly. After a couple of hours anxiously waiting for the mail to bring my new juice I realized its MLK day and there will be no deliveries.