I have a nice running 87 Cherokee. Only problem is a mouse keeps getting into the vehicle. Is there a common entry point for these critters? Is there a way to keep them out?

 

Vacuum out your XJ get rid of its food source, lol. Setup mouse trap around its perimiter. He's probably getting in a rust hole somewhere...

 

Keep a cat in the jeep. Yeah your going to have to look everywhere for even the smallest hole even missing door seal. You have to remember a mouse can get into a hole that is quarter the size of the mouse itself.
Welcome to the forum.

 

I thought a mouse was std equipment when you bought a XJ? My guess is they come in from under the console.