Yeah, you\'ll definitely want to keep them out of the house and \"discourage\" them from your property. I\'ve found that once they realize the area is no longer safe, they will move on. Not to be grotesque, but a dead rat left in a trap for a few days will definitely rid you of the issue.
Unfortunately, an indoor dog will keep them out of the living spaces, but once the rats realize it\'s not a threat to them in the crawlspace, attic, walls, wherever, they will essentially ignore your dog and drive it insane.
Neighbors had a Jack Russel and a HUGE rat nest in their crawl space. Poor dog was put on doggie-valium until they removed the nest.
Oh, and as RonM mentioned, posion works, but it has unintended consequences. They don\'t \"go outside\" to die, they\'ll die right in your walls. They also don\'t die instantly, so the other rats don\'t associate their death with the area you\'ve put out poison, so they will continue to come back. God forbid your dog finds a poisoned dead rat, too.