Being in remote areas, I have had frequent guests in my engine compartment, none have ever made it into my camper or motorcycle trailer. I first noticed the guests a couple of months after I got my truck, as there were bits of insulation pulled out off of my turbos and fashioned into a nest in a small recessed area. I did what any farmer does, I put some D-Con boxes up in the engine compartment, where nothing can get to them but the guests that I wish to unwelcome. I change the carton out after a month or so, as they deteriorate with time and temperatures. It is noticeable that the "treats" have been taken, as they do disappear and have found a couple relocated in the compartment. Since then, I have not seen any more damage to my truck, after 5 years of preventive steps. But, I do see the problem in the Fall, as temperatures begin to drop over any other time of the year.
Also, Denver's Airport, D.I.A., has a lot of problems with Rabbits eating the wire insulation off of cars, parked in their long term parking lots. It was interesting video on Channel 9news, one time seeing the Rabbits disappearing up into the cars and then back down on the ground. Don't always assume it is the little critters doing the damage, it might just be the cuddly ones too.
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