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

https://simonhdyg611.juniperbrief.com/posts/why-escondido-homeowners-are-investing-in-attic-rodent-proofing-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.