Urgent Help Mouse In Car!!!!

[COPO 70 RS/Z28]

This morning my son came in and said "dad I think there is an animal in the garage, I heard some scratching or something" well we went and sat in the garage for a while and to my horror I heard the sound of mouse teeth grinding on metal at the back on my Impala!!!!!!!!

I searched the site and read about Irish spring soap and mothballs. Are these the best way to get the bugger out and how long will it take to get the smell out of the car ?????

Any other ideas or tips, I cant use poison because we have pets and I fear one of them finding a dead mouse would surely look upon it as a delicacy.