i had a rat in my car...
ratsac was a snack to the blasted *bleeper*
Brommer (brommar??) kil was the only thing that killed it. yes it stank but it was in my car...

DO you have a cat? or know any one who'd lend you one? and open *one* vent with some penutbutter/cheese/ratty snacks then lock the cat with some water/food/litter in the room for a day or two??

We had a rat in our kitchen... our JRT caught it and killed it. one of the three (that i know of) that in the a grarage was killed by our kitten and a second the JRT chased down and killed (and the third one is now being extra sneaky)

Honestly there isnt much you can do - they come in looking for food and will chew though anything to get it (they chewed through a skerting board that already had a small hole in it) to get into our kitchen!! i then put borommar kill in the hole and filled it up with expanda putty stuff and *touch wood* havent seen them again - we also have our two cats in 90% of the time too. good luck i know how horrid they can be!