Rodents often get under San Diego homes through torn crawl-space covers, open vents, gaps under doors, loose flashing

https://jaredjkvh827.fairmontdigest.com/posts/what-san-diego-homeowners-should-do-about-roof-rats-2

Rodents often get under San Diego homes through torn crawl-space covers, open vents, gaps under doors, loose flashing, and openings where utility or A/C lines enter exterior walls.