OOT Auto Shop/Home & Garden - Call I got from my mechanic

[Freakin]

So I took my car in for servicing today to the dealership (i'm not a fish, I just have free service until the warranty is up). I got a call a little while later from the service manager saying that I have a rodent problem.

Me:"A what?!?!?"
Them:"Rodents. They made a nest in your engine compartment"
...
Me:"um, what?"
Them:"It appears whatever the rodent was is chewing up your engine air filter and making a nest around the cabin air filter. You should definitely change the engine air filter, and probably both"
Me:"Cost, etc?"
Them:"About $80 total for both filters including labor"
Me: "Give me chewed up filters"
Them: "Of course, we'll leave them in the car"

So.... what the hell do I do? Do I leave traps in my garage under the car? What do I bait them with? Any chance these thing/s are still living in my engine compartment or something?

This is about as confused as I have ever been about a problem. I didn't even know this kind of stuff happens.