Yeah, I would say then that this might be sufficient: https://www.amazon.com/Loraffe-Repellent-Ultrasonic-Deterrent-Protection/dp/B07LCKBGY8/ref=sr_1_3?keywords=car+mouse+repellent&qid=1563814782&s=gateway&sr=8-3 in addition to wire meshing, rat tape, and some chemical deterrents sprayed all over.

https://snag.gy/06gvao.jpg - this should be stealth (it's both ultrasonic and a strobe light). That with meshing the 5+1 areas in the front hood (under the cowl - there are 5 holes, one of which I believe is the cabin air filter entry, then the 6th one is that opening above the front passenger wheel area in the front hood area - and either the galvanized stainlees steel mesh or foam can cover that up).

I updated the post I sent to you with some new links.