Are your gutters so full of debris that you have trees and weeds growing out of them? If gutters sit full of debris for long, they will cause the roof edge to fail.
One of American Animal Control's most effective solutions for keeping the roof edge in good shape is regular gutter cleaning. We were on location in Fort Wayne, Indiana recently cleaning gutters.
When roof edges, soffits, & fascia are compromised by damaging effects from unmaintained gutters, it is easy for squirrels, raccoons, and other animals to gain entry into the attic and walls. This is largely preventable.