Eeeek! I can't STAND mice in the house!!

We had a mouse come in our house a year or so ago. We got these rodent repellers (that plug in the wall and make irritating sounds for the mouse). It worked, and he left. Then we got all the holes he made under the sink sealed, so he never returned.

I don't know how to advise you though, because a rodent repeller would repel your rats too. You don't want to do that.