Type of Passive Crawl Space Vent to prevent rodent entrance

[Pam Wallace]

My old crawl space vents have some areas (around the edge) where rodents have chewed through during the winter. What type/brand of vents (i.e. passive open/close) could I replace them with that would prevent this occuring in the future?

[Rick Cantrell]

My old crawl space vents have some areas (around the edge) where rodents have chewed through during the winter. What type/brand of vents (i.e. passive open/close) could I replace them with that would prevent this occuring in the future?
There are few things a rodent cannot gnaw through.
Just repair or replace.
You might consider calling an exterminator to get rid of them.

[John Kogel]

Google 'rat proof foundation vent'.