Mice

Hi all,



There are numerous posts that deal with mice in the trailer and motorhome, but what about your tow vehicle.



I can't keep them from getting into my engine compartment and eating the insulation off the "Firewall".



I was wondering if any of you have had that problem and what you did about it. I thought there might be some kind of spray that could be applied directly to the firewall insulation that would discourage them from tearing it apart, but I have not seen anything produced commercially.



Thanks,



Henry