Pigeons, rats and cockroaches oh my!!

Well if it not one form of wild life in our house it is another. We have been living peacefully with a rat for almost a year. he doesn't bother us, we do not bother him. well now he is breaking the rules the last couple of days and breaking into all our food, getting into the cupboards and making a mess. today we discovered his nest because a whole loaf of bread was missing...yes the entire loaf plus packaging (he is that big!)...and we discovered it behind the fridge along with a grocery bag of other items...i now understand the term pack rat after seeing our friend turned enemys little home. so now the war is on...we, well i have been resistant to poisoning the little guy from the begining cuz i do not want to deal with the carcass but today after cleaning up that nest i am ready for a little rodent homicide.