Similar problem in rural area. Mice and kangaroo rats eating vehicle wiring. Hot pepper spray on the wiring harnesses seemed to solve most of it. At first I bo

Similar problem in rural area. Mice and kangaroo rats eating vehicle wiring. Hot pepper spray on the wiring harnesses seemed to solve most of it. At first I bought a hot spray at farm store but it was really expensive and gone quickly so I made my own. The commercial spray was essentially hot pepper extract and glycerin and kerosene (or some solvent, smelled like diesel). I bought several big bags of dried long hot peppers (in New Mexico these should be available), soaked them in acetone, evaporated most of the acentone, mixed in some glycerin (from pharmacy suppositories.. I honestly don't know what the purpose of glycerin is other than the commercial spray had it). Then diluted with rubbing alcohol. I also added a little peppermint oil which I understand mice dislike. Worked really well fwitw and spraying this all over the wire harnesses several times a year stopped the problem. Getting a cat solved the problem permanently though without spray. But now there are less birds about as well.