The Value Add Center is used to reload your Wash Card that is used at each machine. The Card can be loaded with Cash ($1, $5, $10, $20) or with Credit/Debit Cards ($10, $15, $20, $25).
The cards cost $2 each and are dispensed by this machine, they are reusable as long as you keep them.
If you use a $20 dollar bill, you will receive a $2 bounce. (cash only)