Sealing your eaves is key to a rat-free attic because roof-line gaps

https://gregorybjcv091.urbanvellum.com/posts/what-san-diego-homeowners-should-do-about-roof-rats-2

Sealing your eaves is key to a rat-free attic because roof-line gaps and attic vent openings should be screened with corrosion-proof mesh and properly sealed to block access.