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My suggestion for cattle prods has been summarily rejected, so we're open to other ideas.

What is the cattle prods method?

Poking unruly children with an electrified goad stick. https://en.wikipedia.org/wiki/Cattle_prod

Omg! This is hilarious! Are you allowed to restrict their library time if they misuse it or are disruptive?

Yes, and the threat of terminating their computer privileges for a day is really far more painful to them than any electroshock devices ever could be.

That's good! I think you're on to something then. Have you brought this idea up to the attention of the other library staff?

It's standard library policy regarding that kind of disruptive behavior.