We are always coming across rodent damage. They don't mind if you have a clean house or untidy they just want somewhere warm and dry to live. They WILL eat your cables. Don't ask me why but they love to do this. So remember to keep a regular supply of baits on hand to keep them at bay. It is not a pleasant job to do the repairs required. And they are increasing the possibilities of an electrical fire. So take care and do regular checks for rodents at your place.