Today when I had the car serviced, the mechanic said there appeared to be a mouse (or possibly a chip monk) living in the air filter. He cleaned the assembly out and replaced the filter.
Over the winter, I keep the car in the garage so perhaps the critter found the engine warmth to be inviting. My thought would be to put some sort of screen over the intake at the grille to keep the varmints out.
Is there such a thing from Nissan or after-market or would I have to make one my self?
I will also set some traps in the garage.