"I keep the hoods open on all my vehicles. Mice/chipmunks do not like these open spaces and will stay out of the engine compartment."
This is really important and I do it too, especially in my detached shop, and including my Kioti tractor's hood.
My wife's 2009 Subaru Tribeca was parked in our house garage and she had bird seed and peanuts in shells for birds not correctly stored. The mice carried peanuts up into her hood's open spaces, which were never able to be removed. And worst of all they made a nest behind her glove box and ate through wires causing her power brakes to not work right. About $2,500 to repair all that! The dealership says mice cause damage to vehicles all the time.
A way to trap and kill mice without poison is to set up a bucket with water. YouTube has lots of videos on this and I'm going to set up this kind of trap.