The keeper can accept cash and checks, but not credit or debit cards.[1] So, while the keeper is present, the business cannot accept card payments. This disrupts most businesses so badly that they desperately scramble to come up with cash to pay their debt.[2] It gets the message across to management very effectively.
I've done this once. I got paid in full.
[1] https://sfsheriff.com/services/civil-processes/levies/carry-...
[2] https://www.grundonlaw.com/the-power-of-till-taps-debt-colle...