YGBSM. Seriously, they're actually going to try to capture and relocate rats? Since when in hell did rats become an endangered species worthy of preservation? They're effin RATS, for gawds sake, millions if not billions of the bloody things on this planet.
Last I heard, D-CON was still pretty darned effective.
Now, if it's lobbyists we're talking about.... then the jumbo-sized container of D-CON is called for, mixed in with their coffee aka Lilly Tomlin-style.