RatS... plural..? If you've seen more than one, there are probably 100 more that you haven't seen. That's a problem for pest control. You'll likely need to leave your house for a few days while they do whatever-it-is they do to kill all the rats... I'm thinking it's poisonous gas, or something like that. Until you can get someone in there, try putting out rat poison, that should knock out a few of 'em. From now on, do not leave any food crumbs ANYwhere, sweep your floors daily, take your trash out daily & keep ALL foods that are not canned in the refrigerator where rats can't go until the rat problem is resolved.