I think this is a good idea. If you have ever slipped your "ears" off inside a range, it's pretty damaging and can shock you. In a self defense situation this could cause someone not expecting it to freeze, be starteled,and loose concentration. Not good in a protect your family moment. Not to...
I would think if he was inside your screened in porch let alone kitchen you would be good .
But I would call dnr or whomever agency before he has a chance to break in again. Funny a 19 lb dog caused a bear to flee!