Really sorry to hear this . Our neighbours Range Rover got stolen about a year ago, that really freaked us out so know the exact feeling. Saw the rats on CCTV and it didn't take them that long. At that time we were having our diner and the neighbours were at home too.
Would you not consider Pandora? Highly recommend.
Have thought about this however the key blocker and ghost seem to be preventing it atm, they haven’t got into the car.
Hopefully with the failed attempts they won’t bother anymore