After more then 30 years in my home a Squirrel(s) have decided to chew thier way into my attic through the plastic(?) gable Louvers. I have solved the problem of the squirrels getting in by installing 19 qauge 1/4 inch mesh. The problem is they are still TRYING to get in by destroying the louvered gable vent. Can metal louvered gable vents be found?