Just drive them out into the countryside or woods, far away from anyone's houses.
Make sure your dad doesn't use rat poison if he goes the non-humane route after all. It's bad for
other animals which may possibly come upon it or the poisoned rat. Once eaten, the rat really slows down, making it easy prey for a cat or dog. They bite into the poisoned rat and they ingest the poison. Rat poisoning is one of the most horrible, slow ways to die. Basically the kidneys shut down. There is NO antidote or remedy when a pet ingests rat poison.
Also, don't call Terminex. Their specialty is termites & BUGS.
BUGS ≠ RATS.They aren't even the same biological phylum or class of living things.
My former landlady called them and they charged her $70 to put out sticky glue traps that anyone could have bought from
Walmart.

They didn't even work. The rat did get trapped on it. But, after a few hours, worked his way off. The trap looked like the hairy residue of a hot wax hair removal strip.

The rat was probably bald on one side afterward.

But, still quite alive.