I am an IT guy that previously was an Orkin pest control tech. Mice and other rodents will chew anything. The best way of getting rid of them is to cut of their food supply. Poison traps everywhere. Block access and egress with the proper copper wool/steel wool. (they don't like biting it anymore than you would) That expanding foam stuff works good for outside walls because they are feeling around for warm drafts when they are outside. Mechanical multi-catch traps can work awesome if well placed. I know that years ago they were looking to make wire insulation containing hot chili pepper/capsicum oil and had great success. I always wanted to try it but never had a chance. Run your cables through a chili pepper bath when installing maybe? Rodents don't see very well at all so use that to your advantage, like placing traps along walls. Traps in the middle of a room hardly ever work. Glue traps are usually used as a monitoring station for insects not for trapping mice. Those ultra sonic devices are just a scam as far as I know. Hope this helps.

Just what the developing world needs... A keyboardless, headless, 4 pound box (computer) that just happens to be able to make a phone call. Like no other gadgets can do this.